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ehidna [41]
3 years ago
7

Suppose x = 7 is a solution to the equation 4x − 2(x + a) = 8. Find the value of a that makes the equation true. A: 2 B: 3 C: -2

5 D: 6
Mathematics
1 answer:
notsponge [240]3 years ago
7 0

if x =7 then plug in 7 for x

4(7) - 2((7)+a) = 8

28 - 14 -2a = 8

14 - 2a = 8

-2a = -6

a = 3

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