Question

六年级数学解方程...急急..帮帮忙..!(要有过程...)

17/50=X%

Answer 1

解：
(3/8)X=(310-X)×2/5
(3/8)X=310×2/5-(2/5)X
(3/8)X+(2/5)X=124
(15+16)X/40=124
X=160

Answer 2

(1-1/11)x×1/2=156-X-12
(10/11)X*1/2+X=144
(5/11)X+X=144
(16/11)X=144
X=144/(16/11)=144*11/16=99

Answer 3

17/50=x%

17/50=34/100=x/100

所以x=34