vincentchen
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Solve the equation x + 0.7 = 1 - 0.2x in two different ways.Then check your answer.Explain
Hint: One way is
add 0.2x on both side,
then minus 0.7 on both side,
finally divide 1.2 on both side,and
you will get x=0.25 as your answer.


Give me another way to solve the equation plz!

Respuesta :

texaschic101
x + 0.7 = 1 - 0.2x.....On ur way, u put the variables on the left...my way, I will put them on the right side

subtract 1 from both sides
subtract x from both sides
resulting in :
0.7 - 1 = -0.2x - x 
-0.3 = -1.2x ...divide both sides by -1.2
-0.3 / -1.2 = x
0.25 = x

abidemiokin

Convert the decimals to fractions, collect the like terms and simplify to get the value of x.

Given the expression x + 0.7 = 1 - 0.2x

To solve for x, we can express the decimals as fractions first to have:

[tex]x + \frac{7}{10} = 1- \frac{2x}{10}[/tex]

Collect the like terms as shown:

[tex]x+ \frac{2x}{10} = 1 - \frac{7}{10} \\\frac{10x+2x}{10} = \frac{10-7}{10}\\10x + 2x = 10 - 7\\12x = 3\\x = \frac{3}{12}\\x = 0.25[/tex]

Another way is to convert the decimals to fractions, collect the like terms and simplify to get the value of x.

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