Question

A)2×=-4+× B) 20+×=20 C) 8×-3=10×

Answer 1

a)
2x = -4 + x 
2x -x = -4
x = -4

b)
20 + x = 20
x = 20 - 20
x = 0

c)
8x -3 = 10x
8x - 10x = 3
-2x = 3
x = - 3/2

Answer 2

A) 2x = -4 +x
2x-x=-4
x = -4

B) 20 + x =20
x = 20-20=0

C)8x - 3 = 10x
10x - 8x = -3
2x = -3
x = -3/2