解方程得
3.65×0.3-7x=10.4
1.095-7x=10.4
7x=1.095-10.4
x=-9.305÷7
x约=-1.33
根据题意列出等式:
3.65×0.3-7×x=10.4
1.095-7×x=10.4
1.095-10.4=7×x
-9.305=7×x
x =1.329
0.3×3.65 - 7x = 10.4
7x = - 9.305
x ≈ -1.329