5a+10a-(20a-5a)+20a-(10a-5a)=1505

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Solution for 5a+10a-(20a-5a)+20a-(10a-5a)=1505 equation: 


Simplifying
5a + 10a + -1(20a + -5a) + 20a + -1(10a + -5a) = 1505

Combine like terms: 20a + -5a = 15a
5a + 10a + -1(15a) + 20a + -1(10a + -5a) = 1505

Remove parenthesis around (15a)
5a + 10a + -1 * 15a + 20a + -1(10a + -5a) = 1505

Multiply -1 * 15
5a + 10a + -15a + 20a + -1(10a + -5a) = 1505

Combine like terms: 10a + -5a = 5a
5a + 10a + -15a + 20a + -1(5a) = 1505

Remove parenthesis around (5a)
5a + 10a + -15a + 20a + -1 * 5a = 1505

Multiply -1 * 5
5a + 10a + -15a + 20a + -5a = 1505

Combine like terms: 5a + 10a = 15a
15a + -15a + 20a + -5a = 1505

Combine like terms: 15a + -15a = 0
0 + 20a + -5a = 1505
20a + -5a = 1505

Combine like terms: 20a + -5a = 15a
15a = 1505

Solving
15a = 1505

Solving for variable 'a'.

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

Divide each side by '15'.
a = 100.3333333

Simplifying
a = 100.3333333

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