3z-5(100-3z)=400

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Solution for 3z-5(100-3z)=400 equation:


Simplifying
3z + -5(100 + -3z) = 400
3z + (100 * -5 + -3z * -5) = 400
3z + (-500 + 15z) = 400

Reorder the terms:
-500 + 3z + 15z = 400

Combine like terms: 3z + 15z = 18z
-500 + 18z = 400

Solving
-500 + 18z = 400

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '500' to each side of the equation.
-500 + 500 + 18z = 400 + 500

Combine like terms: -500 + 500 = 0
0 + 18z = 400 + 500
18z = 400 + 500

Combine like terms: 400 + 500 = 900
18z = 900

Divide each side by '18'.
z = 50

Simplifying
z = 50

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