What is 0.1x-0.2y=2,x+y=17 ?

The solution to 0.1x-0.2y=2,x+y=17 is x=18,y=-1

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0.1x-0.2y=2,x+y=17

0.1 x - 0.2 y = 2, x + y = 17

x = 18, y = - 1

Solution steps

[0.1 x - 0.2 y = 2 x + y = 17]

Isolate

x

for

0.1 x - 0.2 y = 2 : x = 20 + 2 y

Substitute

x = 20 + 2 y

[20 + 2 y + y = 17]

Simplify

[20 + 3 y = 17]

Isolate

y

for

20 + 3 y = 17 : y = - 1

For

x = 20 + 2 y

Substitute

y = - 1

x = 20 + 2 (- 1)

20 + 2 (- 1) = 18

x = 18

The solutions to the system of equations are:

x = 18, y = - 1

5 x = 4, + 2 y x + y = 12

15 x + 3 y = 0, - 2 x + 3 y = 2

3 x + 2 y = - 11, 7 x - 4 y = 9

3 a + b = 13, - 4 a + b = - 36

x + 2 y = 4, 2 x + y = 2