(21z+15)-(7+13)=(9z+35)-(z+9)

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Solution for (21z+15)-(7+13)=(9z+35)-(z+9) equation:


Simplifying
(21z + 15) + -1(7 + 13) = (9z + 35) + -1(z + 9)

Reorder the terms:
(15 + 21z) + -1(7 + 13) = (9z + 35) + -1(z + 9)

Remove parenthesis around (15 + 21z)
15 + 21z + -1(7 + 13) = (9z + 35) + -1(z + 9)

Combine like terms: 7 + 13 = 20
15 + 21z + -1(20) = (9z + 35) + -1(z + 9)

Multiply -1 * 20
15 + 21z + -20 = (9z + 35) + -1(z + 9)

Reorder the terms:
15 + -20 + 21z = (9z + 35) + -1(z + 9)

Combine like terms: 15 + -20 = -5
-5 + 21z = (9z + 35) + -1(z + 9)

Reorder the terms:
-5 + 21z = (35 + 9z) + -1(z + 9)

Remove parenthesis around (35 + 9z)
-5 + 21z = 35 + 9z + -1(z + 9)

Reorder the terms:
-5 + 21z = 35 + 9z + -1(9 + z)
-5 + 21z = 35 + 9z + (9 * -1 + z * -1)
-5 + 21z = 35 + 9z + (-9 + -1z)

Reorder the terms:
-5 + 21z = 35 + -9 + 9z + -1z

Combine like terms: 35 + -9 = 26
-5 + 21z = 26 + 9z + -1z

Combine like terms: 9z + -1z = 8z
-5 + 21z = 26 + 8z

Solving
-5 + 21z = 26 + 8z

Solving for variable 'z'.

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

Add '-8z' to each side of the equation.
-5 + 21z + -8z = 26 + 8z + -8z

Combine like terms: 21z + -8z = 13z
-5 + 13z = 26 + 8z + -8z

Combine like terms: 8z + -8z = 0
-5 + 13z = 26 + 0
-5 + 13z = 26

Add '5' to each side of the equation.
-5 + 5 + 13z = 26 + 5

Combine like terms: -5 + 5 = 0
0 + 13z = 26 + 5
13z = 26 + 5

Combine like terms: 26 + 5 = 31
13z = 31

Divide each side by '13'.
z = 2.384615385

Simplifying
z = 2.384615385

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