解方程 x-1.5=4

解方程 x-1.5=4 x+3.2=4.6 5x=1.5 x÷3=2.1.
2024-12-02 22:02:10
推荐回答(1个)
回答1:

(1)x-1.5=4,
x-1.5+1.5=4+1.5,
x=5.5;

(2)x+3.2=4.6,
x+3.2-3.2=4.6-3.2,
x=1.4;

(3)5x=1.5,
5x÷5=1.5÷5,
x=0.3;

(4)x÷3=2.1,
x÷3×3=2.1×3,
x=6.3.