Answer:
The solution is w=4
simply
-30
divide by 10
W=4
Step-by-step explanation:
1 0 ( + 3 ) = 7 0
1 0 + 3 0 = 7 0
Subtract 30 from both sides of the equation
simplify
10w=40
Divide both sides of the equation by the same term
10/40