1=-7-4a

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Solution for 1=-7-4a equation:


Simplifying
1 = -7 + -4a

Solving
1 = -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.
1 + 4a = -7 + -4a + 4a

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

Add '-1' to each side of the equation.
1 + -1 + 4a = -7 + -1

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

Combine like terms: -7 + -1 = -8
4a = -8

Divide each side by '4'.
a = -2

Simplifying
a = -2

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