1.2z+21=2z-3

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Solution for 1.2z+21=2z-3 equation:


Simplifying
1.2z + 21 = 2z + -3

Reorder the terms:
21 + 1.2z = 2z + -3

Reorder the terms:
21 + 1.2z = -3 + 2z

Solving
21 + 1.2z = -3 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
21 + 1.2z + -2z = -3 + 2z + -2z

Combine like terms: 1.2z + -2z = -0.8z
21 + -0.8z = -3 + 2z + -2z

Combine like terms: 2z + -2z = 0
21 + -0.8z = -3 + 0
21 + -0.8z = -3

Add '-21' to each side of the equation.
21 + -21 + -0.8z = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -0.8z = -3 + -21
-0.8z = -3 + -21

Combine like terms: -3 + -21 = -24
-0.8z = -24

Divide each side by '-0.8'.
z = 30

Simplifying
z = 30

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