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.5-.02a=3.4
We simplify the equation to the form, which is simple to understand
.5-.02a=3.4
We move all terms containing a to the left and all other terms to the right.
-0.02a=+3.4-0.5
We simplify left and right side of the equation.
-0.02a=+2.9
We divide both sides of the equation by -0.02 to get a.
a=-145
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