5.5x+6.7=7.8 28-x+3.6=20 3.5x-0.8x=11.34 8x-27.54÷2.7=1.8 6.2x-x=41.6 9x-14×5.5=58.
问题描述:
5.5x+6.7=7.8 | 28-x+3.6=20 | 3.5x-0.8x=11.34 |
8x-27.54÷2.7=1.8 | 6.2x-x=41.6 | 9x-14×5.5=58. |
答
(1)5.5x+6.7=7.8, 5.5x+6.7-6.7=7.8-6.7, 5.5x=1.1, 5.5...