2a-7-5(a+1)=-(-4a+7)

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Solution for 2a-7-5(a+1)=-(-4a+7) equation:


Simplifying
2a + -7 + -5(a + 1) = -1(-4a + 7)

Reorder the terms:
2a + -7 + -5(1 + a) = -1(-4a + 7)
2a + -7 + (1 * -5 + a * -5) = -1(-4a + 7)
2a + -7 + (-5 + -5a) = -1(-4a + 7)

Reorder the terms:
-7 + -5 + 2a + -5a = -1(-4a + 7)

Combine like terms: -7 + -5 = -12
-12 + 2a + -5a = -1(-4a + 7)

Combine like terms: 2a + -5a = -3a
-12 + -3a = -1(-4a + 7)

Reorder the terms:
-12 + -3a = -1(7 + -4a)
-12 + -3a = (7 * -1 + -4a * -1)
-12 + -3a = (-7 + 4a)

Solving
-12 + -3a = -7 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
-12 + -3a + -4a = -7 + 4a + -4a

Combine like terms: -3a + -4a = -7a
-12 + -7a = -7 + 4a + -4a

Combine like terms: 4a + -4a = 0
-12 + -7a = -7 + 0
-12 + -7a = -7

Add '12' to each side of the equation.
-12 + 12 + -7a = -7 + 12

Combine like terms: -12 + 12 = 0
0 + -7a = -7 + 12
-7a = -7 + 12

Combine like terms: -7 + 12 = 5
-7a = 5

Divide each side by '-7'.
a = -0.7142857143

Simplifying
a = -0.7142857143

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