21x+5-1.6x=100

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Solution for 21x+5-1.6x=100 equation:


Simplifying
21x + 5 + -1.6x = 100

Reorder the terms:
5 + 21x + -1.6x = 100

Combine like terms: 21x + -1.6x = 19.4x
5 + 19.4x = 100

Solving
5 + 19.4x = 100

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + 19.4x = 100 + -5

Combine like terms: 5 + -5 = 0
0 + 19.4x = 100 + -5
19.4x = 100 + -5

Combine like terms: 100 + -5 = 95
19.4x = 95

Divide each side by '19.4'.
x = 4.896907216

Simplifying
x = 4.896907216

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