SOLUTION: Evaluate 3x-7y when x=-2and y=-3 please explain

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Question 42084: Evaluate 3x-7y when x=-2and y=-3
please explain
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
"Evaluate" means "find the value of..."
You can find the value of 3x-7y when x = -2 and y = -3 by substituting these values of x and y into their respective locations in the given expression...watch!
3x-7y = 3(-2)-7(-3) Now do the math!
3(-2)-7(-3) = -6-(-21) = -6 + 21 = 15 ...and there you have it!