-385=7(1-7a)

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Solution for -385=7(1-7a) equation:


Simplifying
-385 = 7(1 + -7a)
-385 = (1 * 7 + -7a * 7)
-385 = (7 + -49a)

Solving
-385 = 7 + -49a

Solving for variable 'a'.

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

Add '49a' to each side of the equation.
-385 + 49a = 7 + -49a + 49a

Combine like terms: -49a + 49a = 0
-385 + 49a = 7 + 0
-385 + 49a = 7

Add '385' to each side of the equation.
-385 + 385 + 49a = 7 + 385

Combine like terms: -385 + 385 = 0
0 + 49a = 7 + 385
49a = 7 + 385

Combine like terms: 7 + 385 = 392
49a = 392

Divide each side by '49'.
a = 8

Simplifying
a = 8

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