19.4k views
23 votes
Which is the solution to the equation 0.5 x + 4.2 = 5.9? Round to the nearest tenth if necessary.

0.9
3.4
5.1
20.2.

1 Answer

2 votes
Move all terms not containing x
x to the right side of the equation.

Subtract 4.2 from both sides of the equation.
0.5x = 5.9 - 4.2

Subtract 4.2 from 5.9.
0.5x = 1.7

Divide each term in 0.5 = 1.7 by 0.5 and simplify.

Divide each term in 0.5x = 1.7 by 0.5.

0.5x =1.7
0.5. = 0.5

Simplify the left side.
Cancel the common factor of 0.5.

X = 1.7
0.5

Simplify the right side. Divide 1.7 by 0.5.
The answer is X =3.4
User Aardvark
by
4.7k points