X by 63:-
28 x - 54 x = 4
- 26 x = 4
x = - 4 / 26
x = - 2 / 13
2007-08-17 10:29:52
·
answer #1
·
answered by Como 7
·
2⤊
0⤋
4x/9 - 6x/7 = 4/63
Find a common denominator 9*7=63
(7) * 4x/9 - (9) * 6x/7 = 4/63
28x/63 - 54x/63 = 4/63
now carry out problem
26x/63 = 4/63
x = 4/63 / 26/63
when dividing fractions, you multiply the reverse by the other number
x = 4/63 * 63/26
x = (4*63) / (63*26) = 252/1638
x = (252/63) / (1638/63) 63 is the common factor
x = 4 / 26 you can further simplify by dividing by common factor which would be 2
x = (4/2) / (26/2)
x = 2/13
2007-08-17 09:52:54
·
answer #2
·
answered by acey5654 3
·
0⤊
0⤋
4x/9 - 6x/7 = 4/63 multiply both sides by 9 and 7
7(4x) - 9(6x) = 4(9)(7)/63
28x - 54x = 4(63)/63
-26x = 4
x = -4/26 = -2/13
2007-08-17 09:41:40
·
answer #3
·
answered by Jen 3
·
0⤊
0⤋
4x/9 - 6x/7 = 4/63
Multiply both sides of the equation by 63
63(4x/9) - 63(6x/7) = 63(4/63)
28x - 54x = 4
- 26x = 4
Divide both side of the equation by - 26
- 26x / - 16 = 4 / - 26
x = - 4/26
Simplify
x = - 2/13
- - - - - - - -s-
2007-08-17 10:01:23
·
answer #4
·
answered by SAMUEL D 7
·
1⤊
0⤋
(4x/9 * 63) - (6x/7 * 63) = 4/63 * 63
4x * 7 - 6x * 9 = 4
28x - 54x = 4
-26x = 4
x = -2/13
2007-08-17 09:46:17
·
answer #5
·
answered by Anonymous
·
0⤊
0⤋
4x/9-6x/7= 4/63
Find the LCD and don't forget to multiply the top as the bottom.
28x/63-54x/63= -26x/63
-26x/63=4/63
now solve for x.
2007-08-17 11:23:49
·
answer #6
·
answered by Anonymous
·
0⤊
2⤋
x^2 - 6x - 7 = 0. to end the sq. divide -6 via 2 and sq. the effect. upload the effect to the two factors of the equation. (x^2 - 6x + 9) - 7 = 9. element the trinomial (x^2 - 6x + 9) which will become: (x - 3)^2 - 7 = 9. upload 7 to the two factors of the equation to get: (x-3)^2 = sixteen. Take the sq. root of the two factors of the equation to get: x-3 = + or - 4. Set x-3 to each and each. x - 3 = +4. upload 3 to the two factors to get: answer x = 7. x - 3 = -4. upload 3 to the two factors to get: answer x = -a million.
2016-10-15 23:23:57
·
answer #7
·
answered by simpkins 4
·
0⤊
0⤋
4x/9-6x/7=4/63
28x/63-54x/63=4/63
-26x/63=4/63
-26x=4
-13x=2
x= -2/13
2007-08-17 11:38:24
·
answer #8
·
answered by Anonymous
·
0⤊
2⤋
4x/9-6x/7=4/63-------------*63
28x-54x=4
-26x=4
x=4/-26=-2/13
2007-08-17 09:39:22
·
answer #9
·
answered by Anonymous
·
0⤊
0⤋
i have no idea how to solve this
2007-08-17 09:40:36
·
answer #10
·
answered by crayonsarecool 3
·
0⤊
0⤋