10. - 3.8x - 5.9x = 223.1

-23

Step-by-step explanation: You have to combine like terms first:

-3.8x - 5.9x = 223.1

-9.7x = 223.1

Then divide om each side of the equation by - 9.7.

-9.7x/-9.7 = 223.1/-9.7

x = - 23

x=-23

Step-by-step explanation:

-3.8x-5.9x=223.1

Collect like terms by calculating the sum or difference of their coefficients

(-3.8-5.9) x

calculate the difference

-9.7x=223.1

Divide both sides of the equation by - 9.7

-9.7x: (-9.7) = 223.1: (-9.7)

Any expression divided by itself equals 1

x=223.1: (-9.7)

x=-23