1/4x + 6 + 1/5x - 3/20x = 4.2
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Given the numerical expression:
1/4x + 6 + 1/5x - 3/20x = 4.2
Solve for x.
Solution:
In order to easily solve the given numerical expression, we convert the fractions into decimals.
¼x = 0.25x
1/5x = 0.2x
-3/20x = 0.15x
Now we can easily solve the equation.
0.25x + 6 + 0.2x - 0.15x =4.2
0.3x+ 6 =4.2
Transpose 6 on the other side of the equation, note that when transposing a number the sign changes.
0.3x = 4.2 - 6
0.3x = -1.8
Divide both sides by 0.3 in order to get the value of x.
0.3x/0.3 = -1.8/0.3
x = -6
Final answer:
x = -6