Question

PLS HELP CHECK :(
Check and answer I'm confused

Answer 1

(for the blank ones)

1. -13

2.x= -3

3.
`(10)/(3)` or 3.5 or 3
`(1)/(3)`

Answer 2

Explanation:

3(10-x) = 3*10 - 3*x = 30 - 3x

When x = 3, -5x + 2 = -5*3 + 2 = - 15 + 2 = -12

-6x - 7 = 11 { add 7 to both sides}

-6x - 7 + 7 = 11+7

-6x = 18 {divide both sides by -6}

-6x/-6 = 18/-6

x = -3

3x + 10 = -20 {subtract 10 from both sides}

3x +10 - 10 = -20 - 10

3x = - 30 {divide both sides by 3}

3x/3x = -30/3

x = -10