计算:4x/4x+3y+3/1+3y

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计算:4x/4x+3y+3/1+3y
计算:4x/4x+3y+3/1+3y

计算:4x/4x+3y+3/1+3y
通分
公分母是(4x+3y)(1+3y)
所以原式=[4x(1+3y)+3(4x+3y)]/(4x+3y)(1+3y)
=(4x+12xy+12x+9y)/(4x+3y)(1+3y)
=(12xy+16x+9y)/(4x+12xy+3y+9y^2)

=[4x(1+3y)+3(4x+3y)]/(4x+3y)(1+3y)
=(4x+12xy+12x+9y)/(4x+3y)(1+3y)
=(12xy+16x+9y)/(4x+12xy+3y+9y^2)