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Popular >

6x+7y=9,8x+9y=11

Solution

6 x + 7 y = 9, 8 x + 9 y = 11

Solution

x = - 2, y = 3

Solution steps

[6 x + 7 y = 9 8 x + 9 y = 11]

Isolate

x

for

6 x + 7 y = 9 : x = \frac{9 - 7 y}{6}

Substitute

x = \frac{9 - 7 y}{6}

[8 \cdot \frac{9 - 7 y}{6} + 9 y = 11]

Simplify

[\frac{- y + 36}{3} = 11]

Isolate

y

for

\frac{- y + 36}{3} = 11 : y = 3

For

x = \frac{9 - 7 y}{6}

Substitute

y = 3

x = \frac{9 - 7 \cdot 3}{6}

\frac{9 - 7 \cdot 3}{6} = - 2

x = - 2

The solutions to the system of equations are:

x = - 2, y = 3

Popular Examples

x+y=50,2x+4y=160

x + y = 50, 2 x + 4 y = 160

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

4x+y=-1,5x-2y=-24

4 x + y = - 1, 5 x - 2 y = - 24

a = a + a, a = 7

3x+2y=16,2x+5y=18

3 x + 2 y = 16, 2 x + 5 y = 18

Frequently Asked Questions (FAQ)

What is 6x+7y=9,8x+9y=11 ?
The solution to 6x+7y=9,8x+9y=11 is x=-2,y=3