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Y equals -5x plus 5 and 3x plus 2y equals 3 solve this equation using substitution?
y = -5x+5 (Equation 1)
3x+2y = 3 (Equation 2)
you see the the first equation is equal to y. just put that into the second equation.
3x + 2(-5x+5) = 3 (now do algebra and find x)
3x - 10x + 10 = 3
-7x = -7
-x = -1
x = 1
Now put x into one of the equations to find y
y = -5(1) + 5 (Equation 1)
y = -5 + 5
y = 0
Now put both the x and y into both equations to see if it is truee.
0 = -5(1) + 5 (Equation 1)
0 = -5 + 5
0 = 0 CORRECT
3(1) + 2(0) = 3 (Equation 2)
3 + 0 = 3
3 = 3 CORRECT
Therefore your answers are
x = 1
y = 0
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