2.1q-5.4-1.5=-0.4q-5.9

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Solution for 2.1q-5.4-1.5=-0.4q-5.9 equation: 


Simplifying
2.1q + -5.4 + -1.5 = -0.4q + -5.9

Reorder the terms:
-5.4 + -1.5 + 2.1q = -0.4q + -5.9

Combine like terms: -5.4 + -1.5 = -6.9
-6.9 + 2.1q = -0.4q + -5.9

Reorder the terms:
-6.9 + 2.1q = -5.9 + -0.4q

Solving
-6.9 + 2.1q = -5.9 + -0.4q

Solving for variable 'q'.

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

Add '0.4q' to each side of the equation.
-6.9 + 2.1q + 0.4q = -5.9 + -0.4q + 0.4q

Combine like terms: 2.1q + 0.4q = 2.5q
-6.9 + 2.5q = -5.9 + -0.4q + 0.4q

Combine like terms: -0.4q + 0.4q = 0.0
-6.9 + 2.5q = -5.9 + 0.0
-6.9 + 2.5q = -5.9

Add '6.9' to each side of the equation.
-6.9 + 6.9 + 2.5q = -5.9 + 6.9

Combine like terms: -6.9 + 6.9 = 0.0
0.0 + 2.5q = -5.9 + 6.9
2.5q = -5.9 + 6.9

Combine like terms: -5.9 + 6.9 = 1
2.5q = 1

Divide each side by '2.5'.
q = 0.4

Simplifying
q = 0.4

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