(21x-10)+(19x-10)=180

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Solution for (21x-10)+(19x-10)=180 equation: 


Simplifying
(21x + -10) + (19x + -10) = 180

Reorder the terms:
(-10 + 21x) + (19x + -10) = 180

Remove parenthesis around (-10 + 21x)
-10 + 21x + (19x + -10) = 180

Reorder the terms:
-10 + 21x + (-10 + 19x) = 180

Remove parenthesis around (-10 + 19x)
-10 + 21x + -10 + 19x = 180

Reorder the terms:
-10 + -10 + 21x + 19x = 180

Combine like terms: -10 + -10 = -20
-20 + 21x + 19x = 180

Combine like terms: 21x + 19x = 40x
-20 + 40x = 180

Solving
-20 + 40x = 180

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 40x = 180 + 20

Combine like terms: -20 + 20 = 0
0 + 40x = 180 + 20
40x = 180 + 20

Combine like terms: 180 + 20 = 200
40x = 200

Divide each side by '40'.
x = 5

Simplifying
x = 5

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