Question

怎么写，要过程，谢谢

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Answer 1

(1)x+3/4=7/8,x=7/8-3/4,x=7/8-6/8,x=1/8
(2)2/5+x=7/10,x=7/10-2/5,x=7/10-4/10,x=3/10
(3)x-5/6=1,x=1+5/6,x=11/6
(4)4/7-x=1/14,x=4/7-1/14,x=8/14-1/14,x=7/14,x=1/2
(5)(5/12)x=5/7,x=(5/7)×(12/5),x=12/7
(6)x÷(3/4)=8/15,x=(8/15)×(3/4),x=2/5
(7)(3/20)÷x=3/8,x=(3/20)÷(3/8),x=8/20,x=2/5
(8)x×(7/9)×(3/14)=1/2,x=(1/2)×(9/7)×(14/3),x=3
(9)x÷(4/15)÷(5/8)=2/3,x=(2/3)×(4/15)×(5/8),x=1/9
(10)(2/5)x-3/2=1/4,(2/5)x=1/4+3/2,(2/5)x=7/4,x=(7/4)×(5/2),x=35/8
(11)8/9-(2/3)x=1/3,(2/3)x=8/9-1/3,(2/3)x=5/9,x=5/6
(12)(3/4)x+1/5=9/10,(3/4)x=7/10,x=14/15
(13)7/13+(1/6)x=1又7/13,(1/6)x=1,x=6
(14)(7/8)x÷(7/10)=4/3,x=4/3×(7/10)×(8/7),x=16/15
(15)x-(7/9)x=7/8,(2/9)x=7/8,x=(7/8)×(9/2),x=63/16
(16)(7/6)x+(1/12)x=2,(5/4)x=2,x=8/5
(17)(5/6)x-5/6=0,x-1=0,x=1
请点个采纳呗，谢谢！