X x 27 + X x 30 + X x 43 = 210500

X x ( 27 + 30 + 43 ) = 210500

X x 100 = 210500

X = 210500 : 100

X = 2105

X x (27 + 30 + 43)=210500

X x 100 =210500

X=210500:100

X=2105

X x 27 + X x 30 + X x 43 = 210 500

        X x ( 27 + 30 + 43 ) = 210 500

        X x 100                    = 210 500

                                  X    = 210 500 : 100 

                                   X    = 2105

X x ( 27 + 30 +43 ) = 210500

X x      100              = 210500

X                             = 210500 : 100

X                             = 2105

  X x (27 +30+43) =210500

   X   x 100 = 210500

   X            =210500 : 100

  X                = 215

X x 27 + X x 30 + X x 43 = 210500

X x (27 + 30 + 43) = 210500

X x 100 = 210500

X = 210500 : 100

X = 2105

HT nha bạn !

@ Yu

A x 27 + A x 30 + A x 43 =210 500

=> A x ( 27 + 30 + 43 ) = 210 500

=> A x 100 = 210 500

=> A = 210 500 : 100

=> A = 2 105

Vậy A = 2 105

a) \(y\times27+y\times30+y\times43=210500\)

\(y\times\left(27+30+43\right)=210500\)

\(y\times100=210500\)

\(y=210500\div100\)

\(y=2105\)

b) \(15\times y+85\times y=300\)

\(y\times\left(15+85\right)=300\)

\(y\times100=300\)

\(y=300\div100\)

\(y=3\)

\(a,y\times27+y\times30+y\times43=210500\)

\(\Rightarrow y\times\left(27+30+43\right)=210500\)

\(\Rightarrow y\times100=210500\)

\(\Rightarrow y=210500:100=2105\)

\(b,15\times y+85\times y=300\)

\(\Rightarrow y\times\left(15+85\right)=300\)

\(\Rightarrow y\times100=300\)

\(\Rightarrow y=300:100=3\)

a) y x 27 + y x 30 + y x 43 = 210500

y x ( 27+30+43 ) = 210500

y x 100 = 210500

y = 210500 : 100

y = 2150

b) 15 x y + 85 x y = 300

y x ( 15+85)=300

y x 100 =300

y = 300 : 100

y = 3

a) (x + 5) + (x + 6) + (x + 7) + (x + 8) = 58

x+5+x+6+x+7+x+8=58

4x+(5+6+7+8)=58 

4x+26=58

4x=58-26=32 

x=32:4=8 

b) X x 27 + X x30 + X x 43 = 210500

X x (27+30+43)=210500

X x 100=210500

X=210500:100

X=2105

b) x.27+x.30+x.43 =210500

=>x(27+30+43)=210500

x.100=210500

x=210500:100=2105

a)(x + 5) + (x + 6) + (x + 7) + (x + 8) = 58

=> 4x+(5+6+7+8)=58

=>4x + 26 = 58

=>4x = 58-26 = 32

=>x = 32:4=8

vậy x=8

b)X x 27 + X x30 + X x 43 = 210500

=> X x (27+30+43) = 210500

=>X x 100 = 210500

=> X = 210500;100=2105

vậy x = 2105

4x= 4 nhân x nha

Lời giải  đầy đủ:

Bài 3:tìm x

A,

6.(x+9845)=29042.6

(x+9845)=29042.6:6

x+9845=29042

x=29042-9845

x=19197.

B,

(x:3).8=8.3198

(x:3)=3198.8:8

x:3=3198

x=3198.3

x=9594.

Bài 7:

A/191+x+9=43.5

200+x=215

x=215-200

x=15.

B/x.25.4=125.8

x.100=1000

x=1000:100

x=10.

Bài 8:

A/ 128.x-12.x-16.x=5208000

(128-12-16).x=5208000

100.x=5208000

x=5208000:100

x=52080.

B/ x.27+x.30+x.43=210500

x.(27+30+43)=210500

x.100=210500

x=210500:100

x=2105.

K mình nhé!

\(27x+30x+43x=210500\)

\(100x=210500\)

\(x=210500:100\)

\(x=2105\)

vậy \(x=2105\)

= a x (27 + 30 + 43 )

= a x 100

= 210 500 : 100

= a = 2105

X x 27 + X x 30 + X x 43 = 210 500 . 

X x 100                            = 210 500 . 

X                                      = 210 500 : 100 . 

X                                      = 2105 . 

a) 43 x 27 + 43 x 13 + 43 x 68

= 43 x ( 27 + 13 + 68 )

= 43 x 108

= 43 x ( 100 + 8 )

= 43 x 100 + 43 x 8 

= 4300  + 344

= 4644

b) 90 x 21 + 15 x 10 + 30 x 74

= 30 x 63 + 30 x 5 + 30 x 74

= 30 x ( 63 + 5 + 74 )

= 30 x 142

= 30 x ( 100 + 42 )

= 30 x 100 + 30 x 42

= 3000 + 1260

= 4260

a, 43x27+43x13+43x68

=43x(27+13+68)

=43x108

= 4644

b, 90x21+15x10+30x74

=9x10x21+15x10+3x10x74

=10x189+10x15+10x222

=10x(189+222+15)

=10x426

= 4260

Giải

a)43x27+43x13+43x68

=43(27+13+68)

=43x108

=43x100+43x8

=4300+344

=4644

b)90x21+15x10+30x74

=30x63+30x5+30x74

=30(63+5+74)

=30.142

=4260

a)\(\Leftrightarrow\)\(x(27+30+43)=210500\)

\(\Leftrightarrow\)\(100x=210500\)

\(\Leftrightarrow\)\(x=2105\)

b)\(\Leftrightarrow\)\(x(128-12-16)=5208000\)

\(\Leftrightarrow\)\(100x=5208000\)

\(\Leftrightarrow\)\(x=52080\)

\(x\times27+x\times30+x\times43=210500\)

\(\Leftrightarrow x\times\left(27+30+43\right)=210500\)

\(\Leftrightarrow x\times100=210500\)

\(\Leftrightarrow x=2105\)

a: 27x+30x+43x=210500

nên 100x=210500

hay x=2105

b: 128x-12x-16x=5208000

nên 100x=5208000

hay x=52080