219-7x(x-1)=100

⇒ 7x(x-1)=219-100

⇒ 7x(x-1)=119

⇒ x-1=119:7

⇒ x-1=17

⇒ x=17+1

⇒ x=18

219-7(x+1)=100

7(x+1)=219-100

7(x+1)=119

x+1=119:7

x+1=17

x=17-1

x=16

`@` `\text {Ans}`

`\downarrow`

`219 - 7 \times (x - 1) = 100`

`=> 7 \times (x - 1) = 219 - 100`

`=> 7 \times (x - 1) = 119`

`=> x - 1 = 119 \div 7`

`=> x - 1 = 17`

`=> x = 17 + 1`

`=> x = 18`

Vậy, `x = 18.`

219 - 7(x + 1) = 10²

7(x + 1) = 219 - 10²

7(x + 1) = 219 - 100

7(x + 1) = 119

x + 1 = 119 : 7

x + 1 = 17

x = 17 - 1

x = 16

--------------------

(3x - 2⁴) . 7³ = 2.7⁴

(3x - 16).7³ = 2.7⁴

3x - 16 = 2.7⁴:7³

3x - 16 = 2.7

3x - 16 = 14

3x = 14 + 16

3x = 30

x = 30 : 3

x = 10

Lời giải:

$10+2x=4^5:4^3=4^2=16$

$2x=16-10=6$

$x=6:2=3$

---------

$2x-6^2:18=3.2^2$
$2x-2=12$

$2x=14$

$x=14:2=7$

--------------

$70-5(x-3)=3.2^5=96$

$5(x-3)=70-3.2^5=-26$

$x-3=\frac{-26}{5}$

$x=3+\frac{-26}{5}=\frac{-11}{5}$

------------------

$19-7(x+1)=10^2=100$

$7(x+1)=19-100=-81$

$x+1=\frac{-81}{7}$

$x=\frac{-81}{7}-1=\frac{-88}{7}$

------------

$(3x-2^4).7^3=2.7^4$

$3x-16=2.7^4:7^3=2.7=14$

$3x=14+16=30$

$x=30:3=10$

219-7.(x+1)=100

=> 7.(x+1)=219-100

=> 7.(x+1)=119

=> x+1=119:7

=> x+1=17

=> x=17-1

=> x=16

219-7.(x+1)=100

=>7.(x+1)=219-100=119

=>x+1=119:7

=>x+1=17

=>x=17-1=>x=16

 Tick nhé

\(219-7.\left(x+1\right)=100\)

\(\Rightarrow\)\(7.\left(x+1\right)=219-100\)

\(\Rightarrow\)\(7.\left(x+1\right)=119\)

\(\Rightarrow\)\(\left(x+1\right)=119\div7\)

\(\Rightarrow\)\(x+1=17\)

\(\Rightarrow\)\(x=17-1\)

\(\Rightarrow\)\(x=16\)

219 - 7 (x + 1) = 100

7 (x + 1 ) = 219 - 100

7 ( x + 1 ) = 119

x + 1 = 119 : 7

x + 1 = 17

x = 17 - 1

x = 16

=> x = 16

\(219-7\left(x+1\right)=100\)

\(7\left(x+1\right)=219-100\)

\(7\left(x+1\right)=119\)

\(x+1=119:7\)

\(x+1=17\)

\(x=17-1\)

\(x=6\)

Học Tốt !

219-7(x+1)=100

212(x+1)=100

x+1=100:212

x+1=2,12

x=2,12-1

x=1,12

219 - 7( x + 1 ) = 100

7 ( x + 1 ) = 219 - 100 = 119

x + 1 = 119 : 7 = 17

x = 17 - 1

x = 16

Vậy x = 16.

219-7(x+1)=100

7(x+1)=219-100

7(x+1)=119

x+1=119/7

x+1=17

x=17-1

x=16

219 +7.x+1=100

⇔7x=100-219-1

⇔7x=-120

⇔x=\(\frac{-120}{7}\)

219 +7 . x + 1 = 100

(219 + 1) + 7. x = 100

220 + 7. x = 100

7 . x = 100 - 220

7 . x = -120

x = (-120) : 7

x = \(\frac{-120}{7}\)

dễ không

219-7.(x+1)=100

=> 7.(x+1)=219-100

=> 7.(x+1)=119

=> x+1=17

=> x=16

219 - 7 (x+1) = 100

7 (x+1) = 219 - 100

7 (x+1) = 119

x+1 = 119 : 7

x+1 = 17

x = 17 -1

x = 16

tik mik nha!

219 - 7 ( x + 1 ) = 100

7 ( x + 1 ) = 219 - 100

7 ( x + 1 ) = 119

   x + 1 = 119 : 7

   x + 1 = 17

        x  = 17 - 1 

        x = 16

Tick tớ  nhé bạn ! 

219 - 7 . (x + 1) = 100

\(\Rightarrow\) 7 . (x + 1) = 219 - 100

\(\Rightarrow\) 7 . (x + 1) = 119

\(\Rightarrow\) x + 1 = 119 : 7

\(219-7.\left(x+1\right)=100\)

\(7.\left(x+1\right)=219-100\)

\(7.\left(x+1\right)=119\)

\(\left(x+1\right)=119:7\)

\(\left(x+1\right)=17\)

\(x=17-1\)

\(x=16\)

Vậy \(x=16\)

219 - 7 . ( x + 1) = 100

7 . ( x + 1 ) = 219 - 100

7 . ( x + 1 ) = 119

x + 1 = 119 : 7

x + 1 = 17

x = 17 - 1

x = 16