20⼀13÷7+1⼀7*6⼀13 2⼀3+7⼀6*2⼀3÷6⼀7 x-75%=5⼀8 14÷(3⼀4-1⼀7) (8⼀9-5⼀12+=1⼀4)*36 2⼀5x+9⼀10x=39⼀40

急急急!!!快!!!
2025-06-22 20:51:29
推荐回答(1个)
回答1:

20/13÷7+1/7*6/13 =20/91+6/91=26/91=2/7
2/3+7/6*2/3÷6/7=2/3+7/6*2/3*7/6=2/3(1+49/36)=2/3*85/36=170/108=85/54
x-75%=5/8 x=5/8+3/4=11/8
14÷(3/4-1/7)=14*28/17=392/17
(8/9-5/12+=1/4)*36