(5z-7)(4z+5)=10z(2z-1)

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Solution for (5z-7)(4z+5)=10z(2z-1) equation:


Simplifying
(5z + -7)(4z + 5) = 10z(2z + -1)

Reorder the terms:
(-7 + 5z)(4z + 5) = 10z(2z + -1)

Reorder the terms:
(-7 + 5z)(5 + 4z) = 10z(2z + -1)

Multiply (-7 + 5z) * (5 + 4z)
(-7(5 + 4z) + 5z * (5 + 4z)) = 10z(2z + -1)
((5 * -7 + 4z * -7) + 5z * (5 + 4z)) = 10z(2z + -1)
((-35 + -28z) + 5z * (5 + 4z)) = 10z(2z + -1)
(-35 + -28z + (5 * 5z + 4z * 5z)) = 10z(2z + -1)
(-35 + -28z + (25z + 20z2)) = 10z(2z + -1)

Combine like terms: -28z + 25z = -3z
(-35 + -3z + 20z2) = 10z(2z + -1)

Reorder the terms:
-35 + -3z + 20z2 = 10z(-1 + 2z)
-35 + -3z + 20z2 = (-1 * 10z + 2z * 10z)
-35 + -3z + 20z2 = (-10z + 20z2)

Add '-20z2' to each side of the equation.
-35 + -3z + 20z2 + -20z2 = -10z + 20z2 + -20z2

Combine like terms: 20z2 + -20z2 = 0
-35 + -3z + 0 = -10z + 20z2 + -20z2
-35 + -3z = -10z + 20z2 + -20z2

Combine like terms: 20z2 + -20z2 = 0
-35 + -3z = -10z + 0
-35 + -3z = -10z

Solving
-35 + -3z = -10z

Solving for variable 'z'.

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

Add '10z' to each side of the equation.
-35 + -3z + 10z = -10z + 10z

Combine like terms: -3z + 10z = 7z
-35 + 7z = -10z + 10z

Combine like terms: -10z + 10z = 0
-35 + 7z = 0

Add '35' to each side of the equation.
-35 + 35 + 7z = 0 + 35

Combine like terms: -35 + 35 = 0
0 + 7z = 0 + 35
7z = 0 + 35

Combine like terms: 0 + 35 = 35
7z = 35

Divide each side by '7'.
z = 5

Simplifying
z = 5

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