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-2.5x-7.7=-2.8-2.9x
We move all terms to the left:
-2.5x-7.7-(-2.8-2.9x)=0
We add all the numbers together, and all the variables
-2.5x-(-2.9x-2.8)-7.7=0
We get rid of parentheses
-2.5x+2.9x+2.8-7.7=0
We add all the numbers together, and all the variables
0.4x-4.9=0
We move all terms containing x to the left, all other terms to the right
0.4x=4.9
x=4.9/0.4
x=12+0.1/0.4
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