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Popular >

7x+4y=6,4x-5y=69

Solution

7 x + 4 y = 6, 4 x - 5 y = 69

Solution

x = 6, y = - 9

Solution steps

[7 x + 4 y = 6 4 x - 5 y = 69]

Isolate

x

for

7 x + 4 y = 6 : x = \frac{6 - 4 y}{7}

Substitute

x = \frac{6 - 4 y}{7}

[4 \cdot \frac{6 - 4 y}{7} - 5 y = 69]

Simplify

[\frac{24 - 51 y}{7} = 69]

Isolate

y

for

\frac{24 - 51 y}{7} = 69 : y = - 9

For

x = \frac{6 - 4 y}{7}

Substitute

y = - 9

x = \frac{6 - 4 ( - 9 )}{7}

\frac{6 - 4 ( - 9 )}{7} = 6

x = 6

The solutions to the system of equations are:

x = 6, y = - 9

Popular Examples

2x+2y=16,2x-3y=2

2 x + 2 y = 16, 2 x - 3 y = 2

10x+18y=-11,16x-9y=-5

10 x + 18 y = - 11, 16 x - 9 y = - 5

x - y = 3, 6 x + y = 90

x+3y=52,5x-2y=4

x + 3 y = 52, 5 x - 2 y = 4

2x+3y=3,6y-6x=1

2 x + 3 y = 3, 6 y - 6 x = 1

Frequently Asked Questions (FAQ)

What is 7x+4y=6,4x-5y=69 ?
The solution to 7x+4y=6,4x-5y=69 is x=6,y=-9