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mr_godi [17]
3 years ago
7

Collin wants to solve this system of equations. Which number can he multiply the first equation by so that when the two equation

s are added together, the x term is eliminated?
1/2x + 1/4y = 5
2x + 3/8y = 5

A. -4
B. -2
C. 2
D. 4
Mathematics
2 answers:
Dvinal [7]3 years ago
8 0

Answer:

A.-4

Step-by-step explanation:

I just took the test

siniylev [52]3 years ago
4 0
If u multiply the first equation by -4, u get -2x - y = -20

and when u add the 2 equations..
-2x - y = -20
2x + 3/8y = 5
-----------------
0 - 5/8y = -15.....u notice that the x terms r eliminated.

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