Question

Solve and show work.3a-4a+9=-12a+43-6a

Answer 1

A=2

First simplify

Regroup terms

Simplify

Subtract 9

Simplify

Addc18a

Simplify

Divide both side by 17

Simplify 34/17

Answer 2

$3a-4a+9=-12a+43-6a$
$-a+9=-12a+43-6a$
$-a+9=-18a+43$
$-a+9+18a=43$
$17a+9=43$
$17a=43-9$
$17a=34$
$a=34:17$
$a=2$

The answer is: a=2