Work out the value of 2x + 8y when x = 7 and y = -4

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Josh Toth asked Oct 1, 2023

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25 votes

Work out the value of 2x + 8y
when x = 7 and y = -4

Mathematics
high-school

Josh Toth asked Oct 1, 2023

by Josh Toth

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2 Answers

18 votes

Answer: -18

Explanation:
Substitute X and Y
2(7)+8(-4)
2 times 7= 14
8 times -4= -32
Add 14 and -32 together
Get -18

The Human Bagel answered Oct 4, 2023

by The Human Bagel

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13 votes

Plug in 7 for x and -4 for y…
2(7)+8(-4)=14+(-32)= -18

Answer: -18

Liju Thomas answered Oct 6, 2023

by Liju Thomas

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