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- 2026-04-274x=2.5×16.x的值是( ).
- 2026-04-27解方程. (1)12a-9a=8.7 (2)x-= (3)x+=
- 2026-04-27解方程. (1)+x=1 (2)x-= (3)x+= (4)x+= (5)x-= (6)+x=
- 2026-04-27解方程. (1)x-=0.5 (2)x-= (3)3a-a= 4.2 (4)x+=
- 2026-04-27解方程. (1)3x-x= 4.2 (2)x-12.5%x=5 (3)5x-= (4)76%x-21%x=110
- 2026-04-27解方程. (1)x+3.4=9.03 (2)5x-6=14 (3)3a+4a=1.4 (4)8n-4n=12 (5)7m-4m=27 (6)6y+y=105
- 2026-04-27解方程. (1)19-120%x=7 (2)70%x-25%x=5.4 (3)x+15%x= 4.6 (4)60%x+25= 40 (5)2x+= (6)76%x-21%x=110
- 2026-04-27解方程. (1)x+21%x=36.3 (2)x-29%x=213 (3)60%x+25%x=10.2 (4)90%x-18%x=54