Add: 4x - 23 + 3y and 7x + 15
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=>4x-23+3y+7x+15
=>11x+3y-8
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hey bro anpad here don't know much still
4x - 23 + 3y and 7x + 15
=> 4x+7x= 11x and 3y 15-23=8
=> 11x+3y-8
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