Step-by-step explanation:
-3x + 7y = 5x + 2y (you subtract the 2y from both sides)
-3× + 5y = 5x (then add 3x to both sides)
5y = 8x (use x = - 5)
5y = 8x - 5 = -40 (both sides are divided by 5)
y = -8
answer is (-5, -8)
The equation in standard form would be,

All you have to do is move -2/7x to the other side.
Hope this helped
:D
Answer:
3 - (-7)
= 3 + 7.
Step-by-step explanation:
A double negative is equivalent to a plus.
your answer would be b becuase that is 3/6 so thats half and ou would simply it and 1/4 do the same