-15=-4+7(z-3)

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Solution for -15=-4+7(z-3) equation:


Simplifying
-15 = -4 + 7(z + -3)

Reorder the terms:
-15 = -4 + 7(-3 + z)
-15 = -4 + (-3 * 7 + z * 7)
-15 = -4 + (-21 + 7z)

Combine like terms: -4 + -21 = -25
-15 = -25 + 7z

Solving
-15 = -25 + 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.
-15 + -7z = -25 + 7z + -7z

Combine like terms: 7z + -7z = 0
-15 + -7z = -25 + 0
-15 + -7z = -25

Add '15' to each side of the equation.
-15 + 15 + -7z = -25 + 15

Combine like terms: -15 + 15 = 0
0 + -7z = -25 + 15
-7z = -25 + 15

Combine like terms: -25 + 15 = -10
-7z = -10

Divide each side by '-7'.
z = 1.428571429

Simplifying
z = 1.428571429

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