10(20-3a)+5a=670

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Solution for 10(20-3a)+5a=670 equation:


Simplifying
10(20 + -3a) + 5a = 670
(20 * 10 + -3a * 10) + 5a = 670
(200 + -30a) + 5a = 670

Combine like terms: -30a + 5a = -25a
200 + -25a = 670

Solving
200 + -25a = 670

Solving for variable 'a'.

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

Add '-200' to each side of the equation.
200 + -200 + -25a = 670 + -200

Combine like terms: 200 + -200 = 0
0 + -25a = 670 + -200
-25a = 670 + -200

Combine like terms: 670 + -200 = 470
-25a = 470

Divide each side by '-25'.
a = -18.8

Simplifying
a = -18.8

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