need explaination
2006-09-11 09:44:34 · 6 answers · asked by Anonymous in Education & Reference ➔ Homework Help
3/4x*28 = 3x*28/4 = 3x*7 = 21x
2006-09-11 09:45:36 · answer #1 · answered by bug 2 · 0⤊ 0⤋
You multiply 3 * 28 and divide by 4. So 3/4x * 28 = 21x. You can write 28 as 28/1, so the top is 3*28 and the bottom is 4*1. You get 84/4 which equals to 21.
2006-09-11 16:48:57 · answer #2 · answered by QuriousGirl 2 · 0⤊ 0⤋
28 divided by 4 = 7
7 x 3 = 21
2006-09-11 16:47:59 · answer #3 · answered by Daddybear 7 · 0⤊ 0⤋
3/4x is multiplication between 2 numbers: 3/4 and x.
3/4x*28 is multiplication between 3 numbers: 3/4, x, and 28.
Multiply, for example, the numbers 3, 4, and 5.
3*4=12, 12*5=60.
Now, change the order: 4*5=20, 20*3=60.
So, order doesn't matter (like, in addition, 2+3+4=9 like 3+4+2=9).
So, multiply the factors you can: 3/4 and 28:
3/4*28=84/4=21
Hence, 3/4x*28=84/4x=21x.
Try not to let the literal factors (literal=letter; numerical=number) throw you off track... Just imagine them enclosed in parentheses: 3/4(x)*28.
2006-09-11 16:53:52 · answer #4 · answered by KnowhereMan 6 · 0⤊ 0⤋
3/4x*28=
3/4x*28/1=
3/1x*7/1=
21x.
Oh by the way next time think for yourself because we are not going to be in the examination room with you.
2006-09-11 16:49:29 · answer #5 · answered by Lady 3 · 0⤊ 0⤋
i dont know im only in 6th grade!
2006-09-11 16:46:38 · answer #6 · answered by bryonna p 1 · 0⤊ 0⤋