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7.5x-3.6=2.85-6.9x
We move all terms to the left:
7.5x-3.6-(2.85-6.9x)=0
We add all the numbers together, and all the variables
7.5x-(-6.9x+2.85)-3.6=0
We get rid of parentheses
7.5x+6.9x-2.85-3.6=0
We add all the numbers together, and all the variables
14.4x-6.45=0
We move all terms containing x to the left, all other terms to the right
14.4x=6.45
x=6.45/14.4
x=2.6326530612245/5.8775510204082
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