Solve the eqn: 1/4(x - 0.8) - 0.2(5x + 1/2) = 3

[Math^Kid]

Theres this study problem that I'm just not getting:

Solve the equation 1/4(x - 0.8) - 0.2(5x + 1/2) = 3

Note: The "/" means fractions.

The answer to this problem is "x = -4.4", but I don't know how to get that answer. Can anyone help me? Thank you!

:wink:

 

[jonboy]

Hello, Math^Kid!

Solve: \(\displaystyle \L \;0.25(x\, -\, 0.8)\, -\, 0.2(5x\, +\, 0.5)\,=\,3\)

To expand \(\displaystyle \L \;0.25(x\, -\, 0.8)\), note that it is equal to the sum of \(\displaystyle \L 0.25\,\bullet\,x\) and \(\displaystyle \L 0.25\,\bullet\,(-0.8)\)

For more help on the distributive property go here: Link

Distribute as needed, simplify, and solve the equation as normal. If you get stuck, show us your work and we will help you. :idea:

 

[Math^Kid]

I should have remembered about the Distributive Property; thank you for the reminder.

I have finally manged to figure this one out. Thank you!