7(-8+x)=9-6x
distribute
-56 +7x = 9 -6x
add 6x to each side
-56 +13x = 9
add 56 to each side
13x =65
divide by 13
x=5
Answer: x=5
Answer:
78 Ft. ^2
Step-by-step explanation:
Cut it into two pieces, 6x2, and (15-9)x11, and solve.
1. 12
2. 66
Add: 66+12= 78!
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