Let a,b and c be rationd numbers and b=5/12-5/13a,c=5/13-5/1

Let a,b and c be ration numbers and b=12/5-13/5a,c=13/5-12/5 let a,b and c be rational numbers and b=5分之12-5分之13a,c=5分之13 let a,b and c be rational numbers and b=0.24-0.26a,c=0.26-0. Let a,b and c are raional numbers which satisfy a = 3:b = 4:c = 5 d = a > b And b < c And a < c Or a \ b = c 设a=3,b=4,c=5,计算表达式的值：a+b>c.and.a+c>b.and.b+c>a 英语翻译Let A ,B and C be three points in a plane,such that AB/B Given that a,b,c are three consecutive odd numbers and b*b*b If a,b,c,d are rational numbers(有理数),|a-b|≤9,|c—d|≤16 and |a 已知:(a-b)(b-c)(c-a)/(a+b)(b+c)(c+a)=5/132,求a/(a+b)+b/(b+c)+c/ Let’s ( ) singing and dancing.A.go B.fly C. Tom,Let,s play__that ball.A.with B./ C.and