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

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


Simplifying
2(2z + -5) + -1z = 7(z + 3)

Reorder the terms:
2(-5 + 2z) + -1z = 7(z + 3)
(-5 * 2 + 2z * 2) + -1z = 7(z + 3)
(-10 + 4z) + -1z = 7(z + 3)

Combine like terms: 4z + -1z = 3z
-10 + 3z = 7(z + 3)

Reorder the terms:
-10 + 3z = 7(3 + z)
-10 + 3z = (3 * 7 + z * 7)
-10 + 3z = (21 + 7z)

Solving
-10 + 3z = 21 + 7z

Solving for variable 'z'.

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

Add '-7z' to each side of the equation.
-10 + 3z + -7z = 21 + 7z + -7z

Combine like terms: 3z + -7z = -4z
-10 + -4z = 21 + 7z + -7z

Combine like terms: 7z + -7z = 0
-10 + -4z = 21 + 0
-10 + -4z = 21

Add '10' to each side of the equation.
-10 + 10 + -4z = 21 + 10

Combine like terms: -10 + 10 = 0
0 + -4z = 21 + 10
-4z = 21 + 10

Combine like terms: 21 + 10 = 31
-4z = 31

Divide each side by '-4'.
z = -7.75

Simplifying
z = -7.75

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