Question

4

For each equation, find a value for x that makes the equation true.
a.
x = 3 = 12
b.
2x + 3 = 20
c.
d
- 4x =-24
2(x-4) = 10
e
-0.5x +1.1 =-2.9

Answer 1

For question 4.a), I think you meant x + 3 = 12.

4.a) x + 3 = 12

- 3 -3

x = 9

b.) 2x + 3 = 20

- 3 -3

2x = 17

2 2

x = 8.5

c.) -4x = -24

-4 -4

x = 6

d.) 2(x-4) = 10

2x - 4 = 10

+ 4 +4

2x = 14

2 2

x = 7

e.) -0.5x + 1.1 = -3.9

- 1.1 -1.1

-0.5x = -5

-0.5 -0.5

x = 10