5(4z-1)-4(z+8)=7(2+1)

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Solution for 5(4z-1)-4(z+8)=7(2+1) equation:


Simplifying
5(4z + -1) + -4(z + 8) = 7(2 + 1)

Reorder the terms:
5(-1 + 4z) + -4(z + 8) = 7(2 + 1)
(-1 * 5 + 4z * 5) + -4(z + 8) = 7(2 + 1)
(-5 + 20z) + -4(z + 8) = 7(2 + 1)

Reorder the terms:
-5 + 20z + -4(8 + z) = 7(2 + 1)
-5 + 20z + (8 * -4 + z * -4) = 7(2 + 1)
-5 + 20z + (-32 + -4z) = 7(2 + 1)

Reorder the terms:
-5 + -32 + 20z + -4z = 7(2 + 1)

Combine like terms: -5 + -32 = -37
-37 + 20z + -4z = 7(2 + 1)

Combine like terms: 20z + -4z = 16z
-37 + 16z = 7(2 + 1)

Combine like terms: 2 + 1 = 3
-37 + 16z = 7(3)

Multiply 7 * 3
-37 + 16z = 21

Solving
-37 + 16z = 21

Solving for variable 'z'.

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

Add '37' to each side of the equation.
-37 + 37 + 16z = 21 + 37

Combine like terms: -37 + 37 = 0
0 + 16z = 21 + 37
16z = 21 + 37

Combine like terms: 21 + 37 = 58
16z = 58

Divide each side by '16'.
z = 3.625

Simplifying
z = 3.625

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