Solve for z, x
x=80
z=162
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z-72=90
Consider the first equation. Multiply both sides of the equation by 9.
z=90+72
Add 72 to both sides.
z=162
Add 90 and 72 to get 162.
x-20=60
Consider the second equation. Multiply both sides of the equation by 10.
x=60+20
Add 20 to both sides.
x=80
Add 60 and 20 to get 80.
z=162 x=80
The system is now solved.
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