Brookebrooke200 Brookebrooke200

16-09-2017
Mathematics

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Evaluate 5x – 2y + (7x – y) for x = 7 and y = –2. 90 –18 –45 63

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texaschic101 texaschic101

16-09-2017

5x - 2y + (7x - y).....x = 7 and y = -2
now we sub
5(7) - 2(-2) + (7(7) -(-2)
35 + 4 + (49 + 2)
35 + 4 + 51
90 <===

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michael35 michael35

16-09-2017

I was going to answer this question because I'm doing the same thing in Maths but it's already answered. He is correct though

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