Solve the following equation

2x-y=17

X-y=10

You can isolate y on both sides, getting:

2x-17=y and x-10=y

Then, make the two y equal each other, and solve the equation

2x-17=x-10

The answer would be x=7.

then, plut in the amount into one of the equations:

x-y=10

7-y=10

y=-3

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Therefore, the answer is x=7 and y = - 3, or (7,-3)

This is a system of equations.

1.) Isolate a variable in the equation of your choosing

Ex. x = y + 10

2.) Plug in the new equation to the first original one

Ex. 2 (y + 10) - y = 17

3.) Solve for the variable in the equation

Step one for this: Distribute

Ex. 2y + 20 - y = 17

Step two for this: Combine like terms

Ex. y + 20 = 17

Step three for this: Isolate the variable

Ex. y = - 3

4.) Plug in your answer for one variable into one of the original equations

Ex. X - (-3) = 10

5.) Solve for x

x + 3 = 10

x = 7

The answer is: x = 7, y = - 3