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8x/9除以(x+1)=6分之7 解要有过程,要详细

解答过程: (8x/9) / (x+1) = 7/6 8/9 * [x/((x+1)] = 7/6 x/(x+1) = 7/6 * 9/8 = 63/48 两边同乘(x+1) 得 x = (63/48) * (x+1) x = (63/48)x +63/48 x -(63/48)x = 63/48 (1-63/48)x = 63/48 x = (63/48) / (1-63/48) = (63/48) / (-15/48) = ...

8x =16 x =2

8x一6x=9十1 2x=10 x=5

1/4X5 + 1/5X6 + 1/6X7 + 1/7X8 + 1/8X9 + 1/9X10 = (1/4 - 1/5) + (1/5 - 1/6) + (1/6 - 1/7) + (1/7 - 1/8) + (1/8 -1/9) + (1/9 - 1/10) = 1/4 - 1/10 = 3/20

8/9x=1/6+16/51 解:8/9x=17/102+32/102 8/9x=49/102 x=49/102*9/8 x=147/272

如图

解:8/15(x+3)=4/9 x+3=4/9*15/8 x=4/9*15/8-3 x=-13/6

5/9+3/8X=7 解:3/8x=7-5/9 3/8x=58/9 x=58/9*8/3 x=464/27 8/9X+6/10=8 8/9x=8-6/10 8/9x=37/5 x=37/5*9/8 x=333/40 2/9+3/8X=5 3/8x=5-2/9 3/8x=43/9 x=43/9*8/3 x=344/27

2.7x+4.8x=9 解:7.5x=9 x=9÷7.5 x=1.2

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