(9a-4)-(7a-3)=

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Solution for (9a-4)-(7a-3)= equation:


Simplifying
(9a + -4) + -1(7a + -3) = 0

Reorder the terms:
(-4 + 9a) + -1(7a + -3) = 0

Remove parenthesis around (-4 + 9a)
-4 + 9a + -1(7a + -3) = 0

Reorder the terms:
-4 + 9a + -1(-3 + 7a) = 0
-4 + 9a + (-3 * -1 + 7a * -1) = 0
-4 + 9a + (3 + -7a) = 0

Reorder the terms:
-4 + 3 + 9a + -7a = 0

Combine like terms: -4 + 3 = -1
-1 + 9a + -7a = 0

Combine like terms: 9a + -7a = 2a
-1 + 2a = 0

Solving
-1 + 2a = 0

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + 2a = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2a = 0 + 1
2a = 0 + 1

Combine like terms: 0 + 1 = 1
2a = 1

Divide each side by '2'.
a = 0.5

Simplifying
a = 0.5

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