-2-7(1-5a)=25

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Solution for -2-7(1-5a)=25 equation:


Simplifying
-2 + -7(1 + -5a) = 25
-2 + (1 * -7 + -5a * -7) = 25
-2 + (-7 + 35a) = 25

Combine like terms: -2 + -7 = -9
-9 + 35a = 25

Solving
-9 + 35a = 25

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 35a = 25 + 9

Combine like terms: -9 + 9 = 0
0 + 35a = 25 + 9
35a = 25 + 9

Combine like terms: 25 + 9 = 34
35a = 34

Divide each side by '35'.
a = 0.9714285714

Simplifying
a = 0.9714285714

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