x=x-(170-y)+(170-x-(130-z)
Solve for x
x=y+z-130
Solve for y
y=x-z+130
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x=x-170+y+170-x-\left(130-z\right)
To find the opposite of 170-y, find the opposite of each term.
x=x+y-x-\left(130-z\right)
Add -170 and 170 to get 0.
x=y-\left(130-z\right)
Combine x and -x to get 0.
x=y-130+z
To find the opposite of 130-z, find the opposite of each term.
x=x-170+y+170-x-\left(130-z\right)
To find the opposite of 170-y, find the opposite of each term.
x=x+y-x-\left(130-z\right)
Add -170 and 170 to get 0.
x=y-\left(130-z\right)
Combine x and -x to get 0.
x=y-130+z
To find the opposite of 130-z, find the opposite of each term.
y-130+z=x
Swap sides so that all variable terms are on the left hand side.
y+z=x+130
Add 130 to both sides.
y=x+130-z
Subtract z from both sides.
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