5a-2[4a+5]=7a

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Solution for 5a-2[4a+5]=7a equation:


Simplifying
5a + -2[4a + 5] = 7a

Reorder the terms:
5a + -2[5 + 4a] = 7a
5a + [5 * -2 + 4a * -2] = 7a
5a + [-10 + -8a] = 7a

Reorder the terms:
-10 + 5a + -8a = 7a

Combine like terms: 5a + -8a = -3a
-10 + -3a = 7a

Solving
-10 + -3a = 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
-10 + -3a + -7a = 7a + -7a

Combine like terms: -3a + -7a = -10a
-10 + -10a = 7a + -7a

Combine like terms: 7a + -7a = 0
-10 + -10a = 0

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

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

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

Divide each side by '-10'.
a = -1

Simplifying
a = -1

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