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Work out the value of; 3x + 2y when x = 5 and y = -4
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1 vote
Work out the value of; 3x + 2y when x = 5 and y = -4

User ZK Zhao
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2 Answers

3 votes
3x5=15 2x-4=-8 -8+15=7
User Sachy
by
8.4k points
2 votes
All you have to do is plug the numbers in so -
3(5) + 2(-4)
So 3 * 5 is 15,
15 + 2(-4)
and 2 * -4 is -8.
So 15 + -8 = 7.
So your answer would be 7 :)
User Tersmitten
by
7.9k points
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