7+4a-(2a+9)-(4a+9)=

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Solution for 7+4a-(2a+9)-(4a+9)= equation:


Simplifying
7 + 4a + -1(2a + 9) + -1(4a + 9) = 0

Reorder the terms:
7 + 4a + -1(9 + 2a) + -1(4a + 9) = 0
7 + 4a + (9 * -1 + 2a * -1) + -1(4a + 9) = 0
7 + 4a + (-9 + -2a) + -1(4a + 9) = 0

Reorder the terms:
7 + 4a + -9 + -2a + -1(9 + 4a) = 0
7 + 4a + -9 + -2a + (9 * -1 + 4a * -1) = 0
7 + 4a + -9 + -2a + (-9 + -4a) = 0

Reorder the terms:
7 + -9 + -9 + 4a + -2a + -4a = 0

Combine like terms: 7 + -9 = -2
-2 + -9 + 4a + -2a + -4a = 0

Combine like terms: -2 + -9 = -11
-11 + 4a + -2a + -4a = 0

Combine like terms: 4a + -2a = 2a
-11 + 2a + -4a = 0

Combine like terms: 2a + -4a = -2a
-11 + -2a = 0

Solving
-11 + -2a = 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 + -2a = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -2a = 0 + 11
-2a = 0 + 11

Combine like terms: 0 + 11 = 11
-2a = 11

Divide each side by '-2'.
a = -5.5

Simplifying
a = -5.5

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