im a dummy.. how to solve: x+(x/7)=19 : (?
回答 (6)
2009-03-10 12:40 pm
✔ 最佳答案
x + x/7 = 197(x + x/7) = 7(19)
7x + x = 133
8x = 133
x = 133/8
2009-03-10 11:21 am
another but may be dfficult way to solve it
(1)x+(1/7)x=19
(8/7)x=19
x=21.7
(1)x+(1/7)x=19
(8/7)x=19
x=21.7
2009-03-10 11:20 am
first you get rid of all the fractions. to do this, multiply the whole thing by 7.... so you get 7x+x=133.
then you combine like terms, so you get 8x=133.
then divide both sides by eight end you get x=133/8.
then you combine like terms, so you get 8x=133.
then divide both sides by eight end you get x=133/8.
2009-03-10 11:17 am
Multiplying & dividing first term by 7:
7x/7 + x/7 = 19
Taking common denominator:
(7x + x)/7 = 19
Multiplying both sides of equation by 7:
8x = 19 *7 (Since 7x + x = 8x)
x = 19 * 7/8
= 16.625
7x/7 + x/7 = 19
Taking common denominator:
(7x + x)/7 = 19
Multiplying both sides of equation by 7:
8x = 19 *7 (Since 7x + x = 8x)
x = 19 * 7/8
= 16.625
2009-03-10 11:16 am
x+(x/7)=19
7x+x=133
8x=133
x=133/8 answer//
7x+x=133
8x=133
x=133/8 answer//
2009-03-10 11:16 am
7x + x = 133
8x = 133
x = 133 / 8
8x = 133
x = 133 / 8
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