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Popular >

x+y=21,3x+7y=107

Solution

x + y = 21, 3 x + 7 y = 107

Solution

x = 10, y = 11

Solution steps

[x + y = 21 3 x + 7 y = 107]

Isolate

x

for

x + y = 21 : x = 21 - y

Substitute

x = 21 - y

[3 (21 - y) + 7 y = 107]

Simplify

[63 + 4 y = 107]

Isolate

y

for

63 + 4 y = 107 : y = 11

For

x = 21 - y

Substitute

y = 11

x = 21 - 11

Simplify

x = 10

The solutions to the system of equations are:

x = 10, y = 11

Popular Examples

11x+13y=1,7x-y=0

11 x + 13 y = 1, 7 x - y = 0

x+y=8,4x-3y=-10

x + y = 8, 4 x - 3 y = - 10

3x-2y=-14,2x+3y=8

3 x - 2 y = - 14, 2 x + 3 y = 8

2x+4y+3z=31,0x-8y-9z=4,x+4y-3z=2

2 x + 4 y + 3 z = 31, 0 x - 8 y - 9 z = 4, x + 4 y - 3 z = 2

23p+27q=10,27p+23q=100

23 p + 27 q = 10, 27 p + 23 q = 100

Frequently Asked Questions (FAQ)

What is x+y=21,3x+7y=107 ?
The solution to x+y=21,3x+7y=107 is x=10,y=11