Question

Which expression is equivalent to 1/3(12x+6x-21)

Answer 1

Answer:

$6x-7$

Step-by-step explanation:

$\frac{1}{3} (12x + 6x -21)$

break it into pieces

$\frac{1}{3}*12x = 4x$

$\frac{1}{3}*6x=2x$

$\frac{1}{3} *-21=-7$

put it all together

*since there's no negative in front  of the other numbers except 7 they're positive so you add them*

$4x + 2x - 7$

simplify

$6x - 7$