If $2a-8=4$ and $3b-8=10$ , what is the value of $a+b$ ?

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Answer 1 · 2016-11-03T22:33:34

$a + b = 12$

Solve the first equation for $a$ :

$2a - 8 = 4$

$2a - 8 + 8 = 4 + 8$

$2a = 12$

$2a/2 = 12/2$

$a = 6$

Solve the second equation for $b$ :
$3b - 8 = 10$

$3b - 8 + 8 = 10 + 8$

$3b = 18$

$3b/3 = 18/3$

$b = 6$

Therefore:

$a + b = 6 + 6$

$a + b = 12$

If 2a-8=42a-8=4 and 3b-8=103b-8=10, what is the value of a+ba+b?