2[3-5(z-7)]=8(5z-8)

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Solution for 2[3-5(z-7)]=8(5z-8) equation:


Simplifying
2[3 + -5(z + -7)] = 8(5z + -8)

Reorder the terms:
2[3 + -5(-7 + z)] = 8(5z + -8)
2[3 + (-7 * -5 + z * -5)] = 8(5z + -8)
2[3 + (35 + -5z)] = 8(5z + -8)

Combine like terms: 3 + 35 = 38
2[38 + -5z] = 8(5z + -8)
[38 * 2 + -5z * 2] = 8(5z + -8)
[76 + -10z] = 8(5z + -8)

Reorder the terms:
76 + -10z = 8(-8 + 5z)
76 + -10z = (-8 * 8 + 5z * 8)
76 + -10z = (-64 + 40z)

Solving
76 + -10z = -64 + 40z

Solving for variable 'z'.

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

Add '-40z' to each side of the equation.
76 + -10z + -40z = -64 + 40z + -40z

Combine like terms: -10z + -40z = -50z
76 + -50z = -64 + 40z + -40z

Combine like terms: 40z + -40z = 0
76 + -50z = -64 + 0
76 + -50z = -64

Add '-76' to each side of the equation.
76 + -76 + -50z = -64 + -76

Combine like terms: 76 + -76 = 0
0 + -50z = -64 + -76
-50z = -64 + -76

Combine like terms: -64 + -76 = -140
-50z = -140

Divide each side by '-50'.
z = 2.8

Simplifying
z = 2.8

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