add 6mn,4mn,15,-2mn
alegrabric expression
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Step-by-step explanation:
6mn+4mn+15+(-2mn)
= 6mn + 4mn + 15 - 2mn
= 6mn + 4mn -2mn + 15
= 10mn -2mn +15
= 8mn + 15
FINAL ANSWER: 8mn + 15
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