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2.4=8.7-0.7x
We move all terms to the left:
2.4-(8.7-0.7x)=0
We add all the numbers together, and all the variables
-(-0.7x+8.7)+2.4=0
We get rid of parentheses
0.7x-8.7+2.4=0
We add all the numbers together, and all the variables
0.7x-6.3=0
We move all terms containing x to the left, all other terms to the right
0.7x=6.3
x=6.3/0.7
x=9
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