0
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3x+y=5(4x-7y)=-10
3x+y=20x-35y=-10
-3x -3x
y=17x-35y=-10
-y -y
17x-36y=-10
sorry but that's as far as i could get :(
(2, -1)
x=10
3x + 2 = -10 3x = -12 x = -4
4x + 10 + 3x = 40 - 3x 4x + 10 + 3x + 3x = 40 20x = 40 x = 2
-2
3+3x+7x=13 3x+7x=10 10x=10 x=1
x = 2
The answer is -7
(4, -1)
x=-3
3x+5= 4x-10+10 +103x+15= 4x-3x -3x15=X