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- 2026-04-27若使方程□x+1.5x=4.8的解为x=1.2.□里应填2． [ ]
- 2026-04-27求x的值. (1)+x=2 (2)= (3)x+x= 45× (4)0.6:35%=:x
- 2026-04-27求x的值. (1)0.8x-14=1.3 (2)7.3x+2x= 4 (3)x:1= (4)0.75:x=2.25÷ (5)10x-5-2x= 43 (6)4:=
- 2026-04-278与x的差的2倍是0.5.求x.
- 2026-04-27x =1是哪个方程的解? [ ]A．x-2 =20 B.3x-0.2 =0.1 C.4x -3x =1 D.1.6÷x=0.8
- 2026-04-27解方程. (1)12x-7x=55 (2)x+3x-15=15 (3)6×9-8.5x=37 =18 (5)5x-2.5×2=5
- 2026-04-27解方程.30%x+45%x=27x-25%x=24=
- 2026-04-27求未知数x. (1)3:8=x:2.4 (2):=x:15 (3):x=6: