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12\pi +\pi =8\pi +5\pi
Multiply both sides of the equation by 4.
13\pi =8\pi +5\pi
Combine 12\pi and \pi to get 13\pi .
13\pi =13\pi
Combine 8\pi and 5\pi to get 13\pi .
13\pi -13\pi =0
Subtract 13\pi from both sides.
0=0
Combine 13\pi and -13\pi to get 0.
\text{true}
Compare 0 and 0.
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