Question

Solve each of the following equations.
(a) 31-7=4 - 8x (b) 48 -10 = 5x + 7
c) 30 + 7y=-2y - 6 (d) 2y - 7 = 7y - 27​

Answer 1

Answer:

a) 31 - 7 = 4 - 8x

8x = 4 - 31 + 7

8x = -20

x = -5/2

b) 48-10 = 5x+7

38 = 5x+7

5x = 31

x = 31/5

c) 30+7y = 2y-6

5y = -36

y = -36/5

d) 2y-7 = 7y-27

20 = 5y

y = 4

Answer 2

Step-by-step explanation:

a) -8x = 31-7-4

-8x = 31-11

-8x = 20

x= -20/8

x = -5/2

b) 5x = 38-7

5x = 31

x = 31/5

c) 7y+2y = -6-30

9y = -36

y = -36/9

y = -4

d) 7y-2y = -7+27

5y = 20

y= 20/5

y = 4