Asked by thomas

5x-3y=3
2x-4y=-10
3x+y=(?)

a. -30
b. -13
c. -7
d. 7
e. 13

please answer and explain

11 years ago

Answered by Steve

since the solution to the first two equations is
x=3
y=4
you should have no trouble evaluating 3x+y

11 years ago

Answered by thomas

3(3)+4
9+4
13

answer e

thank you, Steve

11 years ago

Answered by thomas

but could you tell me how to solution the first two equation

11 years ago

Answered by Steve

substitution or elimination will work fine. Time to review your tools for solving systems of equations.

11 years ago

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