3(5z+7)=4(2z-7)

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Solution for 3(5z+7)=4(2z-7) equation:


Simplifying
3(5z + 7) = 4(2z + -7)

Reorder the terms:
3(7 + 5z) = 4(2z + -7)
(7 * 3 + 5z * 3) = 4(2z + -7)
(21 + 15z) = 4(2z + -7)

Reorder the terms:
21 + 15z = 4(-7 + 2z)
21 + 15z = (-7 * 4 + 2z * 4)
21 + 15z = (-28 + 8z)

Solving
21 + 15z = -28 + 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.
21 + 15z + -8z = -28 + 8z + -8z

Combine like terms: 15z + -8z = 7z
21 + 7z = -28 + 8z + -8z

Combine like terms: 8z + -8z = 0
21 + 7z = -28 + 0
21 + 7z = -28

Add '-21' to each side of the equation.
21 + -21 + 7z = -28 + -21

Combine like terms: 21 + -21 = 0
0 + 7z = -28 + -21
7z = -28 + -21

Combine like terms: -28 + -21 = -49
7z = -49

Divide each side by '7'.
z = -7

Simplifying
z = -7

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