Question

Help meeeeeee please

Answer 1

Mistake -2(x+5)=-2x+10, -2(x+5)=-2x-10

Explanation:

7(x-10)-2(x+5)=4x-7+6x-3

7x-70-2x-10=10x-10

5x-80=10x-10

-80+10=10x-5x

-70=5x

-70/5=x

-14=x

Answer 2

• On the second step, while using the distributive property.

`7x - 70 - 2x \: { \red{ + }} \: 10 = 10x - 10`

» the red plus is the mistake, it had to be -10 not positive 10

correction:

`7x - 70 - 2x \: { \green{ - }} \: 10= 10x - 10`

further more:

`- 5x = 50 \\ x = - 10`