Simpliest expression for (12.7y-3.1x) + 5.9y - (4.2y-x)

-2.1x + 14.4y

Step-by-step explanation:

Use the distributive property to eliminate parentheses. Then combine like terms.

(12.7y-3.1x) + 5.9y - (4.2y-x)

= 12.7y - 3.1x + 5.9y - 4.2y + x

= x (-3.1 + 1) + y (12.7 + 5.9 - 4.2)

= - 2.1x + 14.4y