Question

a number consist of two digit ,the difference of whose digit is 3.if 4times the number is equal to 7times the number obtained by reversing the digit ,find the number​

Answer 1

Answer:

x=3/20 y=-3/2

Step-by-step explanation:

10x-y=3 ........ (1) 4(10x+y)=7 (y+10x) 40x+4y=7y+70x -3y-30x=0 10x+y=0...... (2) y=-10x put in equation (2) 10x-(-10x)=3 x=3/20 put in equation (2) 10 (3/20)+y=0 y=-30/20=-3/2