-7=-7.5z-(-7z+3)

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Solution for -7=-7.5z-(-7z+3) equation:


Simplifying
-7 = -7.5z + -1(-7z + 3)

Reorder the terms:
-7 = -7.5z + -1(3 + -7z)
-7 = -7.5z + (3 * -1 + -7z * -1)
-7 = -7.5z + (-3 + 7z)

Reorder the terms:
-7 = -3 + -7.5z + 7z

Combine like terms: -7.5z + 7z = -0.5z
-7 = -3 + -0.5z

Solving
-7 = -3 + -0.5z

Solving for variable 'z'.

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

Add '0.5z' to each side of the equation.
-7 + 0.5z = -3 + -0.5z + 0.5z

Combine like terms: -0.5z + 0.5z = 0.0
-7 + 0.5z = -3 + 0.0
-7 + 0.5z = -3

Add '7' to each side of the equation.
-7 + 7 + 0.5z = -3 + 7

Combine like terms: -7 + 7 = 0
0 + 0.5z = -3 + 7
0.5z = -3 + 7

Combine like terms: -3 + 7 = 4
0.5z = 4

Divide each side by '0.5'.
z = 8

Simplifying
z = 8

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