7(x-1)
You need to provide an "equals" in order to find what x equals
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12x-27=2x+12
10x-27=12
10x=39
x=3.9
Answer: 9
Step-by-step explanation:
When you multiply 9*9, you get 81 whose sum is 9 (8+1)
Likewise, 9*8=72( 7+2=9)
