Question

24. Add: – 7mn + 5, 12mn + 2, 9mn – 8, – 2mn – 3​

Answer 1

Answer:

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Step-by-step explanation:

$\: \: \: \: \: \: \: \: \: – 7mn + 5 \\ + \: \: \: \: \: \: \: \: 12mn + 2 \\+ \: \: \: \: \: \: \: \: 9mn - 8 \\+ \: \: \: - 2mn - 3 \\ - - - - - - - - - - \\ \: \: \: \: \: \: \: \: \: \: 12mn- 4 \\ - - - - - - - - - -$