Answer:
It's -30
Step-by-step explanation:
Combine like terms
− 8
= 2
1
0
−7
= 2
1
0
Divide both sides of the equation by the same term
−
7
= 2
1
0
-7a/-7 = 210/-7
You cancel the -7 on the left side and divide 210 by -7
and then 210/-7 is -30
Hope this helps mark me brainliest!
