100=60a+[40(2a)]

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Solution for 100=60a+[40(2a)] equation:


Simplifying
100 = 60a + [40(2a)]

Remove parenthesis around (2a)
100 = 60a + [40 * 2a]

Multiply 40 * 2
100 = 60a + [80a]

Combine like terms: 60a + [80a] = 140a
100 = 140a

Solving
100 = 140a

Solving for variable 'a'.

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

Add '-140a' to each side of the equation.
100 + -140a = 140a + -140a

Combine like terms: 140a + -140a = 0
100 + -140a = 0

Add '-100' to each side of the equation.
100 + -100 + -140a = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -140a = 0 + -100
-140a = 0 + -100

Combine like terms: 0 + -100 = -100
-140a = -100

Divide each side by '-140'.
a = 0.7142857143

Simplifying
a = 0.7142857143

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