2007-12-30 16:27:04 · 11 answers · asked by MARIE D P 1 in Science & Mathematics ➔ Mathematics
Assume equation is:-
(4/5) x = 80
4x = 400
x = 100
2007-12-31 06:13:10 · answer #1 · answered by Como 7 · 1⤊ 0⤋
You have got to be kidding this far into the semester or quarter and you haven't gotten the transposing fractions by inverting and mutliplying down yet?
Ok!
4/5x = 80 transpose 4/5 by inverting and mutliplying by 5/4
5/4 * 4/5x = 80 * 5/4
5/4 * 4/5 cancel each other out so you are left with.
x = 80 * 5/4 or:
x = 80 /1 * 5/4
which gives you
x = 400 / 4
simplify the fraction:
x = 100 / 1 and 1 divided into 100 = 100
answer is:
x = 100
2007-12-30 16:42:30 · answer #2 · answered by JUAN FRAN$$$ 7 · 0⤊ 0⤋
(4/5)x=80
4x = 80×5
x = 400 / 4
x = 100
2007-12-30 16:34:14 · answer #3 · answered by Mavis 5 · 0⤊ 0⤋
4/5x=80 Source equation
4=400x (multiply both sides by 5x)
400x=4 (switch sides) (optional)
x= 4/400
= 1/100
= 0.01
2007-12-30 16:36:37 · answer #4 · answered by Microbiologist 2 · 0⤊ 0⤋
1)
4/5 x = 80
4x/5 = 80
4x/5 x 5 = 80 x 5
4x = 400
4x/4 = 400/4
x = 100
2007-12-30 16:35:03 · answer #5 · answered by An ESL Learner 7 · 0⤊ 0⤋
4/5x = 80
4 = 80*5x
4 = 400x
x = 4/400
x = 1/100 = 0.01
2007-12-30 17:03:45 · answer #6 · answered by Peter R 1 · 0⤊ 0⤋
100
2007-12-30 16:32:33 · answer #7 · answered by JV 2 · 0⤊ 1⤋
4/5x=80
4x=400
x=100
2007-12-30 16:34:51 · answer #8 · answered by sanjay_sony97 1 · 0⤊ 0⤋
u multiply 5 on both side so you get 4x=400 and divide both sides by 4 to get x=100
2007-12-30 17:21:45 · answer #9 · answered by :D...hello 1 · 0⤊ 0⤋
(4/5)x=80
x=(5/4)*80
x = 100
2007-12-30 17:19:09 · answer #10 · answered by G 3 · 0⤊ 0⤋