4x-2.1x=-77.4

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Solution for 4x-2.1x=-77.4 equation: 



4x-2.1x=-77.4

We move all terms to the left:

4x-2.1x-(-77.4)=0

We add all the numbers together, and all the variables

1.9x+77.4=0

We move all terms containing x to the left, all other terms to the right

1.9x=-77.4

x=-77.4/1.9

x=-40+1/1.3571428571429

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