How do you solve (2a+4)/3=6/9?

1 Answer
Acquaintance
Jul 14, 2016

a=-1

Explanation:

Solve by cross multiplication (a/b = c/d = ad = bc).

(2a+4)/3 = 6/9

(2a+4)(9) = (3)(6)

18a + 36 = 18

18a = -18

a = -1

Plug in -1 for a to check.

(2(-1)+4)/3 = 6/9

2/3 = 6/9

2/3 = (6divide3)/(9divide3)

2/3 = 2/3

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