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Popular >

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

Solution

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

Solution

x = 2, y = 3

Solution steps

[3 x + y = 9 x - 2 y = - 4]

Isolate

x

for

3 x + y = 9 : x = \frac{9 - y}{3}

Substitute

x = \frac{9 - y}{3}

[\frac{9 - y}{3} - 2 y = - 4]

Simplify

[\frac{9 - 7 y}{3} = - 4]

Isolate

y

for

\frac{9 - 7 y}{3} = - 4 : y = 3

For

x = \frac{9 - y}{3}

Substitute

y = 3

x = \frac{9 - 3}{3}

\frac{9 - 3}{3} = 2

x = 2

The solutions to the system of equations are:

x = 2, y = 3

Popular Examples

2x-7y=6,8x-28y=24

2 x - 7 y = 6, 8 x - 28 y = 24

x - y = 7, x + y = 11

2x+3y=15,3x-2y=29

2 x + 3 y = 15, 3 x - 2 y = 29

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

x+y+z=1,x+2y+3z=6,x+3y+4z=6

x + y + z = 1, x + 2 y + 3 z = 6, x + 3 y + 4 z = 6

Frequently Asked Questions (FAQ)

What is 3x+y=9,x-2y=-4 ?
The solution to 3x+y=9,x-2y=-4 is x=2,y=3