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Popular >

4x-y=8,x+y=7

Solution

4 x - y = 8, x + y = 7

Solution

x = 3, y = 4

Solution steps

[4 x - y = 8 x + y = 7]

Isolate

x

for

4 x - y = 8 : x = \frac{8 + y}{4}

Substitute

x = \frac{8 + y}{4}

[\frac{8 + y}{4} + y = 7]

Simplify

[\frac{8 + 5 y}{4} = 7]

Isolate

y

for

\frac{8 + 5 y}{4} = 7 : y = 4

For

x = \frac{8 + y}{4}

Substitute

y = 4

x = \frac{8 + 4}{4}

\frac{8 + 4}{4} = 3

x = 3

The solutions to the system of equations are:

x = 3, y = 4

Popular Examples

4x-2y=20,-5x-5y=-10

4 x - 2 y = 20, - 5 x - 5 y = - 10

5x-4y=3,-10x+8y=-6

5 x - 4 y = 3, - 10 x + 8 y = - 6

x-2y=5,2x+3y=24

x - 2 y = 5, 2 x + 3 y = 24

2x-3y+4=0,x+2y-5=0

2 x - 3 y + 4 = 0, x + 2 y - 5 = 0

2x+3y+4=0,x-5y=11

2 x + 3 y + 4 = 0, x - 5 y = 11

Frequently Asked Questions (FAQ)

What is 4x-y=8,x+y=7 ?
The solution to 4x-y=8,x+y=7 is x=3,y=4