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.4x-2.5=1.3x
We move all terms to the left:
.4x-2.5-(1.3x)=0
We add all the numbers together, and all the variables
.4x-(+1.3x)-2.5=0
We get rid of parentheses
.4x-1.3x-2.5=0
We add all the numbers together, and all the variables
-0.9x-2.5=0
We move all terms containing x to the left, all other terms to the right
-0.9x=2.5
x=2.5/-0.9
x=-2+0.7/0.9
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