真的很急啊..(1)(1/4)x-1/2=3/4(2)(7x-5)/4=3/8(3)(2x-1)/6=(5x+1)/8(4)(1/2)x-7=(9x-2)/6(5)(1/5)x-1/2(3-2x)=1(6)(2x+1)/3=-(5x-1)/6=1(7)1/7(2x+14)=4-2x(8)3/10(200+x)-2/10(300-x)=300*(9/25)

Question

真的很急啊..
(1) (1/4)x-1/2=3/4
(2) (7x-5)/4=3/8
(3) (2x-1)/6=(5x+1)/8
(4) (1/2)x-7=(9x-2)/6
(5) (1/5)x-1/2(3-2x)=1
(6) (2x+1)/3=-(5x-1)/6=1
(7) 1/7(2x+14)=4-2x
(8) 3/10(200+x)-2/10(300-x)=300*(9/25)

Answer 1

(1) (1/4)x=5/4 x=5
(2) 7x-5=3/2 7x=13/2 x=13/14
(3) 16x-8=30x+6 14x=-14 x=-1
(4) 3x-42=9x-2 6x=-40 x=-20/3
(5) 2x-15+10x=10 12x=25 x=25/12
(6) 你的题目出错了
(7) 2x+14=28-14x 16x=14 x=7/8
(8) 600+3x-600+2x=1080 5x=1080 x=216