7[4-5(a-5)]=7(5-4a)

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Solution for 7[4-5(a-5)]=7(5-4a) equation:


Simplifying
7[4 + -5(a + -5)] = 7(5 + -4a)

Reorder the terms:
7[4 + -5(-5 + a)] = 7(5 + -4a)
7[4 + (-5 * -5 + a * -5)] = 7(5 + -4a)
7[4 + (25 + -5a)] = 7(5 + -4a)

Combine like terms: 4 + 25 = 29
7[29 + -5a] = 7(5 + -4a)
[29 * 7 + -5a * 7] = 7(5 + -4a)
[203 + -35a] = 7(5 + -4a)
203 + -35a = (5 * 7 + -4a * 7)
203 + -35a = (35 + -28a)

Solving
203 + -35a = 35 + -28a

Solving for variable 'a'.

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

Add '28a' to each side of the equation.
203 + -35a + 28a = 35 + -28a + 28a

Combine like terms: -35a + 28a = -7a
203 + -7a = 35 + -28a + 28a

Combine like terms: -28a + 28a = 0
203 + -7a = 35 + 0
203 + -7a = 35

Add '-203' to each side of the equation.
203 + -203 + -7a = 35 + -203

Combine like terms: 203 + -203 = 0
0 + -7a = 35 + -203
-7a = 35 + -203

Combine like terms: 35 + -203 = -168
-7a = -168

Divide each side by '-7'.
a = 24

Simplifying
a = 24

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