5a+3(300-a)=1240

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Solution for 5a+3(300-a)=1240 equation:


Simplifying
5a + 3(300 + -1a) = 1240
5a + (300 * 3 + -1a * 3) = 1240
5a + (900 + -3a) = 1240

Reorder the terms:
900 + 5a + -3a = 1240

Combine like terms: 5a + -3a = 2a
900 + 2a = 1240

Solving
900 + 2a = 1240

Solving for variable 'a'.

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

Add '-900' to each side of the equation.
900 + -900 + 2a = 1240 + -900

Combine like terms: 900 + -900 = 0
0 + 2a = 1240 + -900
2a = 1240 + -900

Combine like terms: 1240 + -900 = 340
2a = 340

Divide each side by '2'.
a = 170

Simplifying
a = 170

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