Question

Help me please I will give points

Answer 1

5) x = 21, y = -13

6) x = 20, y = -2

I don't know how to get #7, I'm sorry.

Explanation:

5) 4x - 3(8 - x) = -3

4x - 24 - 3x = -3

+24 +24

4x - 3x = 21

x = 21

y = 8 - 21

y = -13

6) x + 3y = 14

-3y -3y

x = -3y + 14

-5(-3y + 14) + 6y = -28

15y + 14 +6y = -28

21y + 14 = -28

-14 -14

21y = -42

÷21 ÷21

y = -2

x + 3(-2) = 14

x + -6 = 14

+6 +6

x = 20