How do you solve #-0.3x+5.19=-2.31#?

1 Answer
Feb 11, 2017

Answer:

#x=25#

Explanation:

Isolate - 0.3x on the left side by subtracting 5.19 from both sides of the equation.

#-0.3xcancel(+5.19)cancel(-5.19)=-2.31-5.19#

#rArr-0.3x=-7.5#

To solve for x, divide both sides by - 0.3

#(cancel(-0.3) x)/cancel(-0.3)=(-7.5)/(-0.3)#

#rArrx=25#

#color(blue)"As a check"#

Substitute this value into the left side and if equal to the right side then it is the solution.

#(-0.3xx25)+5.19=-7.5+5.19=-2.31#

#rArrx=25" is the solution"#