5/3
7.5x+4.5x=20
1个回答
相关问题
-
4/7x+20=x+5
-
4x-3(20-x)=5x-7(20-x)
-
4x-(20-x)=5x+6(7-x)
-
5x+3.5×4=38 16x-2x=7 5（x+7）=35 6x+4x=52 20÷（x-6）=4 7x-15=4x
-
4/(1x3)+4/(3x5)+4/(5x7)+...+4/(19x20)=多少?
-
解方程．5x-7.8=20.2 解方程．5x-7.8=20.22.5x-x=1.8（4.5+x）×2=13．
-
4x+20=76 3x-15=27 7x-3乘5=55 7x+2=4.5 4x-1.5x=22.5 2(x-1.3)=8
-
(2X2)/1X3+(4X4)/(3X5)+(6X6)/(5X7)+...+(20X20)/(19X21)==?
-
4/3÷x=5/6 (5/6＋5/8)乘X7/20
-
7.5乘8-4X=20