Alright so I have two equations that the paper is giving me to simplify, only problem is I don't know where to start.. and my text book isn't being helpful, so I was wondering if anyone could point me in the right direction? x.x
2/3 (12t - 18) + 2t - 30
40 ( 3/8 * Y - 1/4) + 40 (4/5)
It is also asking me to solve for questions.
2 - (4x + 7) = 3 + 2 (x + 2) ------ I started solving this one by using distributive property after adding 3+2=5 on the right side, making (x + 2) into 5x + 10..?
x/3 + x/4 = -2 ------ This one I started by getting the least common denominator of 3 and 4, which made the equation 4x/12 + 3x/12 = 7x/12 ------ From there it left me with 7x/12 = -2 and from there I am stuck.
Lets pick up again from here. Sorry about the confusion. The key to simplifying the first two expressions is the distributive property, which is very nicely explained here: Distributive Property - Free Math Help. After that, it is just a matter of adding like terms.
Here is the second expression simplified:
Unfortunately, I don't have time to completely go through the third and fourth problems, but e^(i*pi) did a nice job of typing them out. You need to review how the distributive property relates to the order of opperations --why you can't add the 3 and the 2 outside the parentheses first here: . I think that website I put up the link to will help. If this can wait untill tomorrow, I can work with you more then. Just reply and let me know where you are at.
Because you are really not multiplying, you are dividing both sides of the equation by 7/12 (because division undoes the multiplication by 7/12 on the left side of the equation). But to divide by a fraction, you invert the fraction (swap the numerator and the divisor) and rewrite the division as a multiplication like this:
Yes, you are correct in getting -27/7 .
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