-0.5(7z+4)+0.2(5z-15)=

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Solution for -0.5(7z+4)+0.2(5z-15)= equation:


Simplifying
-0.5(7z + 4) + 0.2(5z + -15) = 0

Reorder the terms:
-0.5(4 + 7z) + 0.2(5z + -15) = 0
(4 * -0.5 + 7z * -0.5) + 0.2(5z + -15) = 0
(-2 + -3.5z) + 0.2(5z + -15) = 0

Reorder the terms:
-2 + -3.5z + 0.2(-15 + 5z) = 0
-2 + -3.5z + (-15 * 0.2 + 5z * 0.2) = 0
-2 + -3.5z + (-3 + 1z) = 0

Reorder the terms:
-2 + -3 + -3.5z + 1z = 0

Combine like terms: -2 + -3 = -5
-5 + -3.5z + 1z = 0

Combine like terms: -3.5z + 1z = -2.5z
-5 + -2.5z = 0

Solving
-5 + -2.5z = 0

Solving for variable 'z'.

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

Add '5' to each side of the equation.
-5 + 5 + -2.5z = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -2.5z = 0 + 5
-2.5z = 0 + 5

Combine like terms: 0 + 5 = 5
-2.5z = 5

Divide each side by '-2.5'.
z = -2

Simplifying
z = -2

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