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Popular >

5x+7y=-21,x-8y=24

Solution

5 x + 7 y = - 21, x - 8 y = 24

Solution

x = 0, y = - 3

Solution steps

[5 x + 7 y = - 21 x - 8 y = 24]

Isolate

x

for

5 x + 7 y = - 21 : x = \frac{- 21 - 7 y}{5}

Substitute

x = \frac{- 21 - 7 y}{5}

[\frac{- 21 - 7 y}{5} - 8 y = 24]

Simplify

[\frac{- 21 - 47 y}{5} = 24]

Isolate

y

for

\frac{- 21 - 47 y}{5} = 24 : y = - 3

For

x = \frac{- 21 - 7 y}{5}

Substitute

y = - 3

x = \frac{- 21 - 7 ( - 3 )}{5}

\frac{- 21 - 7 ( - 3 )}{5} = 0

x = 0

The solutions to the system of equations are:

x = 0, y = - 3

Popular Examples

(125^x)/((5^y))=25,2^{3x}*(1/8)^{1-y}=32

\frac{12 5 ^{x}}{( 5 ^{y} )} = 25, 2^{3 x} \cdot (\frac{1}{8})^{1 - y} = 32

(41)/x-1/((y-2))=-1, 4/x+3/((y-2))=5

\frac{41}{x} - \frac{1}{( y - 2 )} = - 1, \frac{4}{x} + \frac{3}{( y - 2 )} = 5

x + y = 7, 2 x + 3 y = 8

3x-2y=1,3x+5y=13

3 x - 2 y = 1, 3 x + 5 y = 13

- 8 + x + 8 x = 2, y = 2

Frequently Asked Questions (FAQ)

What is 5x+7y=-21,x-8y=24 ?
The solution to 5x+7y=-21,x-8y=24 is x=0,y=-3