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解方程34x-1.4=3.6+23x 1.2:23=x5

编辑:chaxungu时间:2026-04-27 13:37:52分类:小学数学题库

解方程
3
4
x-1.4=3.6+
2
3
x
1.2:
2
3
=
x
5
(1)
3
4
x-1.4=3.6+
2
3
x,
3
4
x-1.4-
2
3
x=3.6+
2
3
x-
2
3
x,
1
12
x-1.4=3.6,
1
12
x-1.4+1.4=3.6+1.4,
1
12
x=5,
1
12
1
12
=5÷
1
12

x=60,

(2)1.2:
2
3
=
x
5

2
3
x=1.2×5,
2
3
x=6,
2
3
2
3
=6÷
2
3

x=9.