2b +3c = 4.75b + 2c = 2.75
2b+3c-b-2c=4.75-2.75b+c=2But, b+2c=2.75So, b+2c-b-c=2.75-2 c=0.75Put this value in 2nd eqn,b+2*0.75=2.75b+1.5=2.75b=1.25.I hope you get your answer.