Question

Four fifths of a number. is greater than three fourth of the number by 4.

Answer 1

Answer:

Let the no be x.

According to the Question,

$= > \frac{2x}{5} - \frac{3x}{4} = 4 \\ = > \frac{8x - 15x}{20} = 4 \\ = > - \frac{7x}{20} = 4 \\ = > 7x = - 80 \\ = > x = - \frac{80}{7}$

Answer 2

Answer:

4/5 x= 3/4 x+8

4/5 x - 3/4 x=8

20 Is the lowest common denominator between 4 & 5

5×4=20; 4×5=20

4/5 ×4/4 - 3/4×5/5=8

16/20-15/20=8

1/20=8

20× 1/20= 8×20

1x=160

×=160

4/5 (160)= 3/4 (160)+8

128= 120+8

128=128