Solve the simultaneous equations
-x + 5y = -7
x + y = – 5
x = 1
y= 0
2 answers:
y= -5-x
-x + 5(-5-x) = -7
-x -25-5x =-7
-x-5x = 25 -7
-6x= 18
x = -3
-3 +y = -5
y= -5 +3
=-2
-(-3) + 5(-2)
3 - 10 = -7
Answer:
y= -2, x= -3
Step-by-step explanation:
Firstly, substitute the x and y values:
-x + 5(0)= -7
x+ 0 = -5
second thing to check: DSA - different signs addition (positive x and -x)
-x+5y=-7 take away x+y=-5
6y= -12
y= -2
To find x: -x + 5(-2)= -7
-x= -7 + 10
x= -3
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