Question

What is the result of subtracting the second equation from the first? \begin{aligned} -3x+2y &= 7 \\\\ -3x-2y &= 4 \end{aligned} −3x+2y −3x−2y ​ =7 =4 ​

Answer 1

4y=3

Explanation:

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Answer 2

y = 3/4

Explanation:

Given two equations

-3x+2y = 7 ... (1)

-3x-2y = 4 ... (2)

Subtracting the second equation from the first will give us;

-3x-(-3x)-2y-(+2y) = 4-7

-3x+3x-2y-2y = -3

-2y-2y = -3

-4y = -3

y = 3/4

The result of the difference between the second and the first will give y = 3/4