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40=30x+0.50
We move all terms to the left:
40-(30x+0.50)=0
We add all the numbers together, and all the variables
-(30x+0.5)+40=0
We get rid of parentheses
-30x-0.5+40=0
We add all the numbers together, and all the variables
-30x+39.5=0
We move all terms containing x to the left, all other terms to the right
-30x=-39.5
x=-39.5/-30
x=1+2.7142857142857/8.5714285714286
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