Question

Match the equations with the correct solution.

a. All real numbers
b. x= -2
c. x=3
d. no solution
e. x=1

1. 3x +4=7x -8
2. 2x = 7x - 5
3. 5x -8= 5x + 12
4. 8x +4= - 2x - 16
5.-3x +5= - 3x + 5

Answer 1

a-5, b-4, c-1, d-3, e-2

Explanation:

1) 3x+4 = 7x-8

-4x = -12

x = -3 (c)

2) 2x = 7x-5

-5x = 5

x = 1 (e)

3) 5x-8 = 5x+12

0x = 20

no solution (d)

4) 8x+4 = -2x-16

10x = -20

x = -2 (b)

5) -3x+5 = -3x+5

all real numbers (a)