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z/5-4=21/4
We simplify the equation to the form, which is simple to understand
z/5-4=21/4
Simplifying:
+ 0.2z-4=21/4
Simplifying:
+ 0.2z-4=+5.25
We move all terms containing z to the left and all other terms to the right.
+ 0.2z=+5.25+4
We simplify left and right side of the equation.
+ 0.2z=+9.25
We divide both sides of the equation by 0.2 to get z.
z=46.25
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