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.05x+.25(42-x)=4.90
We move all terms to the left:
.05x+.25(42-x)-(4.90)=0
We add all the numbers together, and all the variables
.05x+.25(-1x+42)-(4.9)=0
We add all the numbers together, and all the variables
.05x+.25(-1x+42)-4.9=0
We multiply parentheses
.05x-0.25x+10.5-4.9=0
We add all the numbers together, and all the variables
-0.2x+5.6=0
We move all terms containing x to the left, all other terms to the right
-0.2x=-5.6
x=-5.6/-0.2
x=27+0.2/0.2
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