(21x+10)+(20x+15)=180

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Solution for (21x+10)+(20x+15)=180 equation:


Simplifying
(21x + 10) + (20x + 15) = 180

Reorder the terms:
(10 + 21x) + (20x + 15) = 180

Remove parenthesis around (10 + 21x)
10 + 21x + (20x + 15) = 180

Reorder the terms:
10 + 21x + (15 + 20x) = 180

Remove parenthesis around (15 + 20x)
10 + 21x + 15 + 20x = 180

Reorder the terms:
10 + 15 + 21x + 20x = 180

Combine like terms: 10 + 15 = 25
25 + 21x + 20x = 180

Combine like terms: 21x + 20x = 41x
25 + 41x = 180

Solving
25 + 41x = 180

Solving for variable 'x'.

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

Add '-25' to each side of the equation.
25 + -25 + 41x = 180 + -25

Combine like terms: 25 + -25 = 0
0 + 41x = 180 + -25
41x = 180 + -25

Combine like terms: 180 + -25 = 155
41x = 155

Divide each side by '41'.
x = 3.780487805

Simplifying
x = 3.780487805

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