9098 x 5 = 45490

3456 x 9999 = 34556554

341111 : 5 = 68,2222

9098x5=45490

3456x9999=34556544

341111:5=68222(dư 2)

mình nhầm lun 

341111 : 5=68222,2

1) 20,22 : 0,5 + 20,22 : 0,125

= 20,22 x 2 + 20,22 x 8

= 20,22 x (2 + 8)

= 20,22 x 10

= 202,2

2) 3456 x 37 + 3456 x 19 + 3456 x 45 - 3456

= 3456 x 37 + 3456 x 19 + 3456 x 45 - 3456 x 1

= 3456 x (37 + 19 + 45 - 1)

= 3456 x 100

= 345600

\(x\times3456-x\times2556+x=27035\)
\(x\times\left(3456-2556+1\right)=27035\)
\(x\times901=27035\)
\(x=27035:901\)
\(x=\dfrac{27035}{901}\)
#AvoidMe

Tuyên bố : đề bài sai

\(x\times3456-x\times2556+x=27035\)

\(x\times\left(3456-2556+1\right)=27035\)

\(x\times901=27035\)

\(x=27035:901\)

\(x=\dfrac{27035}{901}\)

3:

a: -5x-16=-46

=>-5x=-46+16=-30

=>5x=30

=>\(x=\dfrac{30}{5}=6\)

b: -80-(-16-x)=20

=>\(-x-16=-80-20=-100\)

=>x+16=100

=>x=100-16=84

2:

a: \(\left(45-3456\right)+3456\)

\(=45+3456-3456\)

=45

b: \(\left(77+22-75\right)-\left(-25-78-13\right)\)

\(=77+13+22+78-75+25\)

\(=90+100-50\)

=140

c: \(-25\cdot63-25\cdot37\)

\(=-25\left(63+37\right)\)

\(=-25\cdot100=-2500\)

247476

69690

1575936

2012 x 123=247476

3030 x 23 =69690

3456 x 456=1575936

247476

69690

1575936

19629134

3456*5678-1234 = 19623168-1234=19621934                            

9999 x 9999 - 9999 + 9999 * 9999=199950003

8888 x 8888 - 8888 + 8888 * 8888 =78987656

7777 x 7777 - 7777 + 7777 * 7777 =120955681

9999 x 9999 - 9999 + 9999 * 9999=199950003

8888 x 8888 - 8888 + 8888 * 8888 =157984200

7777 x 7777 - 7777 + 7777 * 7777 =120955681

1)199950003

2)78996544

3)120955681

269568

269568

269568