2+x=13
to solve for x, u would subtract 2 from each side
So 2+x-2=13-2
Solving would result in: x=11
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In the equation 3x plus 7 equals 13, x is equal to 2.
5
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Set up the equation and solve: x + 5 = -13 (next subtract 5 from each side of the equation to solve for x) x = -18
n + 13 = 21. n = 21 - 13