Add 9 to both sides:w−9=3Solve for w.To isolate w, we need to get rid of the −9 that is subtracted from it. We can do this by adding 9 to both sides of the equation.w−9+9=3+9
Simplify both sides: Now, simplify both sides of the equation. w=3+9
Combine numbers on right: Add the numbers on the right side of the equation. w=12
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