Question

解方程:3分之2x=3分之1-1,5x+2=3x+4，-4分之1+5分之2x=1

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Answer 1

(1) 7x/4-5=3/8 %D%A 7x/4=43/8%D%A x= 43/14%D%A %D%A(2) x/2 -7 = 9x/6 -2%D%A 3x/6 - 9x/6 = 7-2%D%A -x = 5%D%A x=-5%D%A(3) (2x+1)/3 - (5x-1)/6 = 1%D%A (4x-2)/6 - (5x-1)/6 = 1%D%A (4x-2-5x+1)=6%D%A -x -1=6%D%A x=-7%D%A(4) 3(200+x)/10 - 2(300-x)/10 = 300×9/25%D%A 600+3x-600+2x = 3000×9/25%D%A 5x = 1080%D%A x=216