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9.14x-(3.78x+2.87x)=12.45
We move all terms to the left:
9.14x-(3.78x+2.87x)-(12.45)=0
We add all the numbers together, and all the variables
9.14x-(+6.65x)-(12.45)=0
We add all the numbers together, and all the variables
9.14x-(+6.65x)-12.45=0
We get rid of parentheses
9.14x-6.65x-12.45=0
We add all the numbers together, and all the variables
2.49x-12.45=0
We move all terms containing x to the left, all other terms to the right
2.49x=12.45
x=12.45/2.49
x=4+1/1
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