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4-7*z=12-3*z
We simplify the equation to the form, which is simple to understand
4-7*z=12-3*z
Simplifying:
4-7z=12-3*z
Simplifying:
4-7z=12-3z
We move all terms containing z to the left and all other terms to the right.
-7z+3z=+12-4
We simplify left and right side of the equation.
-4z=+8
We divide both sides of the equation by -4 to get z.
z=-2
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