Question

solve the the following by elemination method 3x+2y=80 4x+3y=110. please answer it ​

Answer 1

given

1>3x+2y=80

2>4x+3y=110

multiply4in 1st equation

and we get,

12x+8y=320>1

multiply3in 2nd equation

and we get,

12x+9y=330>2

by using eliminating method,

12x+8y=320>1

12x+9y=330>2

sub we get,

12x+8y=320

(-) (-)= (-)

12x+9y=330

now we get,

ox-1y=-10

cancelling (-) symbol in both sides we get

y=10

sub y= 10 equation 1

we get

12x+9×10=320

12x+90=320

12x=320-90

12x=230

x=230/12

x=19.1