Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.
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Can anyone help me to understand the process for this problem?
4/5[4-(x/3+8)-4x]+5=14x/15

little_dragon
Posts: 226
Joined: Mon Dec 08, 2008 5:18 pm
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Can anyone help me to understand the process for this problem?
4/5[4-(x/3+8)-4x]+5=14x/15
yeh
U can learn the parentheses here: http://www.purplemath.com/modules/simparen.htm
U can learn solving here: http://www.purplemath.com/modules/solvelin.htm
if U get stuck plz write back w/ UR steps
thnx!!

maggiemagnet
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Joined: Mon Dec 08, 2008 12:32 am
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Can anyone help me to understand the process for this problem?
4/5[4-(x/3+8)-4x]+5=14x/15
Start on the inside and then work your way to the outside:

(4/5)[4 - (x/3 + 8) - 4x] + 5 = (14/15)x

(4/5)[4 - x/3 - 8 - 4x] + 5 = (14/15)x

You and multiply through by 15 here, to get rid of the fractions:

12[4 - 8 - 4x - (1/3)x] + 75 = 14x

12[-4 - (13/3)x] + 75 = 14x

Keep going!