解方程七分之五加二分之三的和x减去九分之七等于九分之十一

2025-05-16 17:12:17
推荐回答(1个)
回答1:

(5/7 + 3/2)x - 7/9 = 11/9
( 10/14 + 21/14) x = 11/9 + 7/9
31/14 x = 2
x = 28/31