15x + 177 - 21
19x + 157
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If its an equation, then:
15x + 177 - 21 = 19x + 157
=> 177 - 21 -157 = 19x - 15x
=> 177 - 178 = 4x
=> 4x = -1
=> x = -1/4 (Answer)
I hope it helps :)
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