w=8
You can add and subtract any like terms. Since 8w, -4w, and 4w are all like terms, since 8, -4, and 4 all tell how many w's you have. This is the essentially same as saying "There are 8 apples, subtract 4 apples, and add 4 apples." (Don't forget that 8w-4w is the same as 8w + -4w). To solve, just add 8, subtract 4, and add 4. Leave w alone. The answer is 4w.
30
7-4w=10 7=10+4w 7-10=4w -3=4w -3/4=w
I'll rewrite it like this. 26=6(5 - 4w) ==> 26/6= (5 - 4w) (divide each side by 6) ==> 26/6 - 5=-4w subtract 5 from each side ==> -4/6=-4w (simplify LHS) ==>4w=4/6 (multiply each side by -1) ==>w=1/6 (divide each side by 4)
7w + 2 = 3w + 94 Subtract 3w from both sides: 4w + 2 = 94 Subtract 2 from both sides: 4w = 92 Divide both sides by 4: w = 23
8w-4w=20 simplifies to 4w=20 and then dividing both sides by 4 we have w=20/4=5
-8 + 4 - (-9) = -8 + 4 + 9 = -8 + 13 = 5.
4
All of them
Well, darling, when you subtract a negative, it's like adding a positive. So, 6 minus a negative 4 is the same as 6 + 4, which equals 10. Math doesn't have to be a headache, honey!
w = 13 add 28 to 180, then subtract 13 from 180 to balance equation. Then 4w + 11 w = 195. Add 4w + 11w =15w, so 15w=180, divide 180 by 15, w = 13 4(13) -28 + 11(13) + 13 = 180
8x-4w = 4