题目内容
解方程
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(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 |
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