`A=3xy^2+5/2xy^2-1/2xy^2+3/4xy^2`
`=xy^2(3+5/2-1/2+3/4)`
`=xy^2(3+2+3/4)`
`=xy^2(5+3/4)`
`=xy^2*23/4`
`=23/4xy^2`
Hệ số: `23/4`
Phần biến: `xy^2`
Bậc: `1+2=3`
`B= -xy^3+5/4xy^3+7/3xy^3-7/4xy^3`
`=xy^3*(-1+5/4+7/3-7/4)`
`=xy^3(1/4+7/3-7/4)`
`=xy^3(-6/4+7/3)`
`=xy^3(-3/2+7/3)`
`=xy^3*5/6`
`=5/6xy^3`
Hệ số: `5/6`
Phần biến: `xy^`
Bậc: `1+3=4`
`C=3x^3y^2+5/2x^3y^2+2/3x^3y^2-6/5x^3y^2`
`=x^3y^2(3+5/2+2/3-6/5)`
`=x^3y^2(11/2-8/15)`
`=x^3y^2*149/30`
`=149/30x^3y^2`
Hệ số: `149/30`
Phần biến: `x^3y^2`
Bậc: `3+2=5`
`D=-x^4y^3-5/3x^4y^3-1/2x^4y^3+6/7x^4y^3`
`=x^4y^3(-1-5/3-1/2+6/7)`
`=x^4y^3(-8/3-1/2+6/7)`
`=x^4y^3(-97)/42`
`=-97/42x^4y^3`
Hệ số: `-97/42`
Phần biến: `x^4y^3`
Bậc: `4+3=7`
