AzizHusain

Hmm, I have no idea, DS! I was think of priceless and those types of words...

146.2 g + 124 g - 9 g

270.2 g - 9 g =

261.2 g.

Grouping signals?

1/6 of 186 = 1/6*186 = 186/6 = 31.

-4(3-x) = 2(x+6)

Distribute the -4 & 2.

-12 + 4x = 2x + 12

Add 12 to both sides and subtract 2x from both sides.

2x = 24

Divide by 2.

x = 24/2 = 12.

2 1/3 --> convert to an improper fraction --> 2*3 + 1 / (3) --> 7/3 = 2.33

Now, convert 2.33 into a percentage by multiplying by 100 --> 2.33*100 = 233 (same as moving the decimal place 2 times to the right)

233% is your answer.

You change unlike denominators to like denominators by comparing the two denominators first:

You have 7/8 & 1/2...7/8 is fine, but 1/2 can be converted to something like #/8 [since 7/8 has 8 as its denominator] by multiplying both the numerator and denominator by 4 --> 1*4 / 2*4 = 4/8.

Now, we can easily subtract --> 7/8 - 4/8 = (7-4)/8 = 3/8.

Multiply anything in the parentheses out: Ex. 4(3x - 2) = 12x - 8.

Collect "like" terms: Suppose we had 12x - 8 + 10x --> 22x - 8.

Cross out anything that is common in both the numerator and the denominator: 22x - 8 / 1(22x - 8) --> cross both (22x - 8) out and we are left with 1/1 = 1!

Ex. 5x^2y^2/(xy) --> we can cross 1 x and 1 y out leaving us with 5xy!

If those NASCAR tire changing people are there, it will take less than a minute!