Question

4(8x + 4) – 20 = -20

Answer 1

To simplify 4(8x+4), multiply 4 by 8x and 4.

(4×8x) + (4×4) = 32x and 16

32x + 16 - 20 = -20

Subtract 16 from both sides.

You should end up with 32x - 20 = -36

Add 20 to both sides.

You should end up with 32x = -16

-16 ÷32 = -1/2

x = -1/2

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Answer 2

x = -1/2

Explanation:

4 (8x + 4) -20 = -20

=> 32x + 16 -20 = -20

=> 32x - 4 = -20

=> 32x = -20 + 4

=> 32x = -16

=> 32x/32 = -16/32

=> x = -1/2

So, x is -1/2 or -0.5