1解方程(一)第1题答案
(1)- 4 6
(2)+ 12 16
(3)÷ 8 ÷ 8 12
(4)略
2解方程(一)第2题答案
x + 3.5 - 3.5 = 10.8 - 3.5
x = 7.3
x = 54 - 24
x = 30
7x = 49
x = 7
126 ÷ x = 42
x = 3
3解方程(一)第3题答案
(1)3.2 + x = 10.5;x = 7.3
(2)5x = 22.5;x = 4.5