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Rory Mcfarland
Mathematics
31 January, 19:34
8) (3a + 3) (3a - 2)
+6)
+3
Answers (
1
)
Desirae Lambert
31 January, 19:38
0
A = 12 + - 1a
Step-by-step explanation:
Simplifying
A + - 1 (8 + - 3a) = 2 (a + 3) + - 2
A + (8 * - 1 + - 3a * - 1) = 2 (a + 3) + - 2
A + (-8 + 3a) = 2 (a + 3) + - 2
Reorder the terms:
-8 + A + 3a = 2 (a + 3) + - 2
Reorder the terms:
-8 + A + 3a = 2 (3 + a) + - 2
-8 + A + 3a = (3 * 2 + a * 2) + - 2
-8 + A + 3a = (6 + 2a) + - 2
Reorder the terms:
-8 + A + 3a = 6 + - 2 + 2a
Combine like terms: 6 + - 2 = 4
-8 + A + 3a = 4 + 2a
Solving
-8 + A + 3a = 4 + 2a
Solving for variable 'A'.
Move all terms containing A to the left, all other terms to the right.
Add '8' to each side of the equation.
-8 + A + 8 + 3a = 4 + 8 + 2a
Reorder the terms:
-8 + 8 + A + 3a = 4 + 8 + 2a
Combine like terms: - 8 + 8 = 0
0 + A + 3a = 4 + 8 + 2a
A + 3a = 4 + 8 + 2a
Combine like terms: 4 + 8 = 12
A + 3a = 12 + 2a
Add '-3a' to each side of the equation.
A + 3a + - 3a = 12 + 2a + - 3a
Combine like terms: 3a + - 3a = 0
A + 0 = 12 + 2a + - 3a
A = 12 + 2a + - 3a
Combine like terms: 2a + - 3a = - 1a
A = 12 + - 1a
Simplifying
A = 12 + - 1a
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