2. Using the substitution method Zoe is solving the following system of equations algebraically:
y + 5x = -2
4x - 7y=-14
Which equivalent equation could Zoe use?
(1) 4(-5x - 2) + 5x =-14
(3) 4x - 7(- 5x – 2)=-14
(2) 4(5x – 2) + 5x =-14
(4) 4x – 7(5x – 2)=-21

side side side

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