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2007-08-17 09:33:07 · 10 answers · asked by Virtuous Woman 1 in Science & Mathematics Mathematics

10 answers

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

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