Question

Solve equation 8x+5y=9 and 3x+2y=4 by elimination method

Answer 1

Dear student,
eqn. 1: 8x+5y=9
eqn. 2: 3x+2y=4
eqn. 1$\times$3 - eqn. 2$\times$8
=> 3(8x+5y)-8(3x+2y)=9x3-4x8
=>24x+15y-24x-16y=27-32
=> -y=-5
=> y=5

Put y=5 in eqn. 2
3x+2x5=4
=>3x+10=4
=> 3x=-6
=>x= -2
Regards