Question

solve the following 5x + 2y = 20, 2x + 3y = 19​

Answer 1

Answer:

Therefore x=2,y=5

Step-by-step explanation:

5x+2y=20-----(1)

2x+3y=19-----(2)

l.c.m of 5 and 2 is 10

2(5x+2y=20)=10x+4y=40-----(3)

5(2x+3y=19)=10x+15y=95------(4)

sub 3 from 4

-11y= -55

y= 5

putting the value of y in eq 2

2x+3y=19

2x+3(5)=19

2x+15=19

2x=19-15

2x=4

x=4/2

x=2