1. (2024五下·七星关月考) 解方程，带☆的要检验。

4.8+x=10.7                                 2.5x=50                           ☆2x÷3.8=0.6

3.7x+5.3x=36                        0.75x-0.8=8.2                         ☆4×0.4+0.4x=10