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解方程 (1)1.56x+3.16 =7.84 (2)7.6x+2x+0.72 =18 (3)5.8 ×4.5 +0.4x =29.1 (4)x +0.7x+0.96 =3 (5)3.9x +9.36

编辑:chaxungu时间:2026-04-27 13:38:17分类:小学数学题库

解方程
(1)1.56x+3.16=7.84(2)7.6x+2x+0.72=18(3)5.8×4.5+0.4x=29.1
(4)x+0.7x+0.96=3(5)3.9x+9.36=13.65(6)(x-3)÷4=7.2
(1)1.56x+3.16=7.84
1.56x=4.68
x=3
(2)7.6x+2x+0.72=18
9.6x=17.28
x=1.8
(3)5.8×4.5+0.4x=29.1
0.4x=3
x=7.5
(4)x+0.7x+0.96=3
1.7x=2.04
x=1.2
(5)3.9x+9.36=13.65
3.9x=4.29
x=1.1
(6)(x-3)÷4=7.2
x-3=28.8
x=31.8