7z+9(5z-4)=68

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Solution for 7z+9(5z-4)=68 equation:


Simplifying
7z + 9(5z + -4) = 68

Reorder the terms:
7z + 9(-4 + 5z) = 68
7z + (-4 * 9 + 5z * 9) = 68
7z + (-36 + 45z) = 68

Reorder the terms:
-36 + 7z + 45z = 68

Combine like terms: 7z + 45z = 52z
-36 + 52z = 68

Solving
-36 + 52z = 68

Solving for variable 'z'.

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

Add '36' to each side of the equation.
-36 + 36 + 52z = 68 + 36

Combine like terms: -36 + 36 = 0
0 + 52z = 68 + 36
52z = 68 + 36

Combine like terms: 68 + 36 = 104
52z = 104

Divide each side by '52'.
z = 2

Simplifying
z = 2

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