[7(a+5)-18]+[3(a-3)+3]=

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Solution for [7(a+5)-18]+[3(a-3)+3]= equation:


Simplifying
[7(a + 5) + -18] + [3(a + -3) + 3] = 0

Reorder the terms:
[7(5 + a) + -18] + [3(a + -3) + 3] = 0
[(5 * 7 + a * 7) + -18] + [3(a + -3) + 3] = 0
[(35 + 7a) + -18] + [3(a + -3) + 3] = 0

Reorder the terms:
[35 + -18 + 7a] + [3(a + -3) + 3] = 0

Combine like terms: 35 + -18 = 17
[17 + 7a] + [3(a + -3) + 3] = 0

Remove brackets around [17 + 7a]
17 + 7a + [3(a + -3) + 3] = 0

Reorder the terms:
17 + 7a + [3(-3 + a) + 3] = 0
17 + 7a + [(-3 * 3 + a * 3) + 3] = 0
17 + 7a + [(-9 + 3a) + 3] = 0

Reorder the terms:
17 + 7a + [-9 + 3 + 3a] = 0

Combine like terms: -9 + 3 = -6
17 + 7a + [-6 + 3a] = 0

Remove brackets around [-6 + 3a]
17 + 7a + -6 + 3a = 0

Reorder the terms:
17 + -6 + 7a + 3a = 0

Combine like terms: 17 + -6 = 11
11 + 7a + 3a = 0

Combine like terms: 7a + 3a = 10a
11 + 10a = 0

Solving
11 + 10a = 0

Solving for variable 'a'.

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

Add '-11' to each side of the equation.
11 + -11 + 10a = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 10a = 0 + -11
10a = 0 + -11

Combine like terms: 0 + -11 = -11
10a = -11

Divide each side by '10'.
a = -1.1

Simplifying
a = -1.1

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