Question

Help please! I need help!!!!

Evita is solving the system of equations shown using the elimination method. first equation: 3x + 8y = 20 second equation: 5x – 2y = 4 - What operation will eliminate one of the variables?

A. multiply the first equation by 2
B. multiply the first equation by 4
C. multiply the second equation by 2
D. multiply the second equation by 4​

Answer 1

D. multiply the second equation by 4​

Explanation:

3x + 8y = 20 __ equation 1

5x – 2y = 4 ___ equation 2

multiply the second equation by 4​

3x + 8y = 20 __ equation 1

20x – 8y = 16 ___ equation 2

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23x = 36

x = 36/23

y = (4-5x)/-2

y = (4-5(36/23))/-2

y = 44/23