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.26(x-13)=7
We move all terms to the left:
.26(x-13)-(7)=0
We multiply parentheses
0.26x-3.38-7=0
We add all the numbers together, and all the variables
0.26x-10.38=0
We move all terms containing x to the left, all other terms to the right
0.26x=10.38
x=10.38/0.26
x=39+0.24/0.26
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