2(7z-1)-6(z+3)=5(2+1)

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Solution for 2(7z-1)-6(z+3)=5(2+1) equation:


Simplifying
2(7z + -1) + -6(z + 3) = 5(2 + 1)

Reorder the terms:
2(-1 + 7z) + -6(z + 3) = 5(2 + 1)
(-1 * 2 + 7z * 2) + -6(z + 3) = 5(2 + 1)
(-2 + 14z) + -6(z + 3) = 5(2 + 1)

Reorder the terms:
-2 + 14z + -6(3 + z) = 5(2 + 1)
-2 + 14z + (3 * -6 + z * -6) = 5(2 + 1)
-2 + 14z + (-18 + -6z) = 5(2 + 1)

Reorder the terms:
-2 + -18 + 14z + -6z = 5(2 + 1)

Combine like terms: -2 + -18 = -20
-20 + 14z + -6z = 5(2 + 1)

Combine like terms: 14z + -6z = 8z
-20 + 8z = 5(2 + 1)

Combine like terms: 2 + 1 = 3
-20 + 8z = 5(3)

Multiply 5 * 3
-20 + 8z = 15

Solving
-20 + 8z = 15

Solving for variable 'z'.

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

Add '20' to each side of the equation.
-20 + 20 + 8z = 15 + 20

Combine like terms: -20 + 20 = 0
0 + 8z = 15 + 20
8z = 15 + 20

Combine like terms: 15 + 20 = 35
8z = 35

Divide each side by '8'.
z = 4.375

Simplifying
z = 4.375

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