200=7(7a-4)+8a

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Solution for 200=7(7a-4)+8a equation:


Simplifying
200 = 7(7a + -4) + 8a

Reorder the terms:
200 = 7(-4 + 7a) + 8a
200 = (-4 * 7 + 7a * 7) + 8a
200 = (-28 + 49a) + 8a

Combine like terms: 49a + 8a = 57a
200 = -28 + 57a

Solving
200 = -28 + 57a

Solving for variable 'a'.

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

Add '-57a' to each side of the equation.
200 + -57a = -28 + 57a + -57a

Combine like terms: 57a + -57a = 0
200 + -57a = -28 + 0
200 + -57a = -28

Add '-200' to each side of the equation.
200 + -200 + -57a = -28 + -200

Combine like terms: 200 + -200 = 0
0 + -57a = -28 + -200
-57a = -28 + -200

Combine like terms: -28 + -200 = -228
-57a = -228

Divide each side by '-57'.
a = 4

Simplifying
a = 4

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