Answer:
-13x+70
Explanation:
Isolate x on one side of the equation.
DISTRIBUTIVE PROPERTY
A(B+C)=AB+AC
A(B-C)=AB-AC
-10(x-7) (First, expand by using with distributive property.)
-10*x=-10x
10*7=70
-10x+70
-10x+70-3x
-10x+70-3x (Solve & add.)
10+3=13
-13x+70
Therefore, the final answer is -13x+70.