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Popular >

x+y=4,2x=5y

Solution

x + y = 4, 2 x = 5 y

Solution

x = \frac{20}{7}, y = \frac{8}{7}

Solution steps

[x + y = 4 2 x = 5 y]

Isolate

x

for

x + y = 4 : x = 4 - y

Substitute

x = 4 - y

[2 (4 - y) = 5 y]

Isolate

y

for

2 (4 - y) = 5 y : y = \frac{8}{7}

For

x = 4 - y

Substitute

y = \frac{8}{7}

x = 4 - \frac{8}{7}

4 - \frac{8}{7} = \frac{20}{7}

x = \frac{20}{7}

The solutions to the system of equations are:

x = \frac{20}{7}, y = \frac{8}{7}

Popular Examples

5x-2y=16,2x-3y=13

5 x - 2 y = 16, 2 x - 3 y = 13

5x-7y-3=2,x-4y+5=0

5 x - 7 y - 3 = 2, x - 4 y + 5 = 0

4x-y=9,2x-3y=-23

4 x - y = 9, 2 x - 3 y = - 23

2 x - y = 2, y - x = 2

4x-8y=-14,2x+4y=-7

4 x - 8 y = - 14, 2 x + 4 y = - 7

Frequently Asked Questions (FAQ)

What is x+y=4,2x=5y ?
The solution to x+y=4,2x=5y is x= 20/7 ,y= 8/7