Simple math blue book question

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1

<p>Number 13 on pg. 890. I was able to make the equation which is t/3+t/6+18=t now, i don't know how to solve for t. I know it's reaaaaally easy but i just can't solve it! Help!</p>

2

<p>t/3+t/6+18=t
2t/6+t/6+18=t
3t/6+18=t
t/2+18=t
18=t/2
36=t</p>

3

<p>Thank you thank you thank you! I knew I was making it harder than it was!</p>

4

<p>Another way to start this that I prefer is to multiply each side of the equation by the lcd, in this case 6. So we get:</p>

<p>6(t/3+t/6+18)=t(6)
2t + t + 108 = 6t
3t + 108 = 6t
108 = 3t
t = 108/3 = 36</p>

5

<p>^^–^^
t/3+t/6+18=t</p>

<p>Even faster, (t/3+t/6) = t/2
…
18= t - t/2
18 = t/2
36 = t</p>