42+3-5z=28-3z

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Solution for 42+3-5z=28-3z equation:


Simplifying
42 + 3 + -5z = 28 + -3z

Combine like terms: 42 + 3 = 45
45 + -5z = 28 + -3z

Solving
45 + -5z = 28 + -3z

Solving for variable 'z'.

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

Add '3z' to each side of the equation.
45 + -5z + 3z = 28 + -3z + 3z

Combine like terms: -5z + 3z = -2z
45 + -2z = 28 + -3z + 3z

Combine like terms: -3z + 3z = 0
45 + -2z = 28 + 0
45 + -2z = 28

Add '-45' to each side of the equation.
45 + -45 + -2z = 28 + -45

Combine like terms: 45 + -45 = 0
0 + -2z = 28 + -45
-2z = 28 + -45

Combine like terms: 28 + -45 = -17
-2z = -17

Divide each side by '-2'.
z = 8.5

Simplifying
z = 8.5

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