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1/8X+75%X=7/16,解方程

1/8x+0.75x=7/16 7/8x=7/16 x=1/2

7(16+x)=140 16+x=140÷7 x=20-16 x=4

X-(7/16-5/24)等于7/24 解:X-11/48=7/24 X=7/24+11/48 X=25/48

x=7/2*6*4=84

1-3x/5=7/16*8/21 1-3x/5=1/6(通分) 30-18x=5(移项) 18x=25 x=25/18

21/8x=16

x=7.8÷0.16 x=48.75

(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

x/12-x/16=-9-7 4x/48-3x/48=-16 x=-768

7/1

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