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45x+4z=23-5y
Subtract 5y from both sides.
45x=23-5y-4z
Subtract 4z from both sides.
45x=23-4z-5y
The equation is in standard form.
\frac{45x}{45}=\frac{23-4z-5y}{45}
Divide both sides by 45.
x=\frac{23-4z-5y}{45}
Dividing by 45 undoes the multiplication by 45.
x=-\frac{y}{9}-\frac{4z}{45}+\frac{23}{45}
Divide 23-5y-4z by 45.
5y+4z=23-45x
Subtract 45x from both sides.
5y=23-45x-4z
Subtract 4z from both sides.
5y=23-4z-45x
The equation is in standard form.
\frac{5y}{5}=\frac{23-4z-45x}{5}
Divide both sides by 5.
y=\frac{23-4z-45x}{5}
Dividing by 5 undoes the multiplication by 5.
y=-\frac{4z}{5}-9x+\frac{23}{5}
Divide 23-45x-4z by 5.