please help solve for x
2007-01-18 10:19:33 · 7 answers · asked by Jemz 3 in Science & Mathematics ➔ Mathematics
21x=60
x=21/60
x=7/20
2007-01-18 10:27:17 · answer #1 · answered by A 150 Days Of Flood 4 · 0⤊ 0⤋
4/21 = x/15
4/21 * 15 = x/15 * 15
60/21 = x
20/7 = x
2007-01-18 18:32:14 · answer #2 · answered by Taras 2 · 0⤊ 0⤋
4/21 = x/15
4(15)/21 = x
60/21 = x
20/7 = x
2007-01-18 18:28:40 · answer #3 · answered by Wolfshadow 3 · 0⤊ 0⤋
4/21 = x/15
15(4)/21 = 15x/15
60/21 = x
20/7 = x
2007-01-18 18:34:32 · answer #4 · answered by Roger G 2 · 0⤊ 0⤋
Multiply both sides of the equation by 15, and reduce the resulting fraction to lowest terms.
2007-01-18 18:27:29 · answer #5 · answered by Helmut 7 · 1⤊ 0⤋
You would cross multiply:
(4)(15)=21x
60/21=x
x=2.86 (Rounded to the nearest hundredth)
2007-01-18 18:27:20 · answer #6 · answered by Anonymous · 1⤊ 0⤋
Cross multiply the fractions so you get:
21x = 60
Now just divide and there is x.
2007-01-18 18:29:04 · answer #7 · answered by AibohphobiA 4 · 0⤊ 0⤋