Answer:
-4
Step by step explanation:
expand
7x-7=5x-15
subtract 5x
2x-7=-15
subtract -7
2x=-8
divide by 2
x=-4
x= -4
Explanation:
if you expand the equation you get
7x-7 = 5x-15
group the like terms together
7x-5x = -15+7
2x= -8
if you divide both sides by 2 to remain with x alone, you get
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