SOLUTION: -x+y=4 3x-2y=-7 using substitution

Question 1035359: -x+y=4 3x-2y=-7 using substitution
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Hi there,
-x+y=4 3x-2y=-7 using substitution
.........
-x+y=4......(1)
3x-2y=-7....(2)
Using Equation(1)
-x + y = 4
Adjust to isolate y
y = 4 + x.....(1)
Now, substitute (4 + x) for y
in Equation(2)
3x - 2y = -7....(2)
3x - 2(4 + x) = -7
3x - 8 -2x = -7
Collect like terms:
3x - 2x = -7 + 8
x = 1
Substitute x = 1 into
Equation(1)
-x + y = 4
-1 + y = 4
y = 4 + 1
y = 5
.........
x = 1 , y = 5
Hope this helps :-)
RELATED QUESTIONS
solve using substitution method (a)y=x-7 (b) 3x+7y=5 3x-y=-1 x+4y=5... (answered by MathLover1)

3x-2y=0 x+y=-5 Solving Systems Using... (answered by stanbon)

y=3x-4 3x-2y=13 Solve for (x,y) using substitution Thank... (answered by Boreal)

5x + 4y = 22, 3x + 5y =21 using substitution method and 3x + 2y =10, x + 2y =7 using... (answered by sachi)

Solve the system using substitution 3x+2y=9... (answered by jim_thompson5910)

Solve the system of equations using substitution. 3x + 2y =7. Y = -3x +... (answered by oscargut)

Y=3x+5 2y-6x=4 using... (answered by checkley77)

How do you solve 6x-y=-4; x+2y=7 using substitution... (answered by stanbon)