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m = -2 n = 3

7(5m + 3n) - 2(4m - 4n) + 15

Pa help! With explaination

Sagot :

Step-by-step explanation:

→ m = –2, n = 3

So:

= 7(5m + 3n) – 2(4m – 4n) + 15

= 7(5(–2) + 3(3)) – 2(4(–2) – 4(3)) + 15

= 7((–10) + 9) – 2((–8) – 12) + 15

= 7(–10 – 9) – 2((–8 + 12) + 15

= 7(–1) – 2(–20) + 15

= –7 – (–40) + 15

= –7 + 40 + 15

= 33 + 15

= 48