solve for the unknown in the following equations.work backward and use inverse operations.

example:N +155 =900 THUS WRITE

N =850 -120 USE THE INVERSE OPERATIOM
N =730 SIMPLIFY



1. N + 155 = 900
2.650 - N =450
3.N × 5 = 300
4. N + 20 =56
5. N- 1 500 = 3 098
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