Solve for x
x=138
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269=x-13+144
Add 216 and 53 to get 269.
269=x+131
Add -13 and 144 to get 131.
x+131=269
Swap sides so that all variable terms are on the left hand side.
x=269-131
Subtract 131 from both sides.
x=138
Subtract 131 from 269 to get 138.
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