解方程0.3x=6
解方程0.3x=611x-8x=6.3x-0.36x=9.6(x-5)÷2=7.54x-4×8=348(x-6.2)=42.4....
解方程0.3x=6 11x-8x=6.3 x-0.36x=9.6 (x-5)÷2=7.5 4x-4×8=34 8(x-6.2)=42.4.
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(1)0.3x=6,
0.3x÷0.3=6÷0.3,
x=20;
(2)11X-8X=6.3,
3x=6.3,
3x÷3=6.3÷3,
x=2.1;
(3)x-0.36x=9.6,
0.64x=9.6,
0.64x÷0.64=9.6÷0.64,
x=15;
(4)(x-5)÷2=7.5,
(x-5)÷2×2=7.5×2,
x-5=15,
x-5+5=15+5,
x=20;
(5)4x-4×8=34,
4x-32+32=34+32,
4x÷4=66÷4,
x=16.5;
(6)8(x-6.2)=42.4,
8(x-6.2)÷8=42.4÷8,
x-6.2=5.3,
x-6.2+6.2=5.3+6.2,
x=11.5.
0.3x÷0.3=6÷0.3,
x=20;
(2)11X-8X=6.3,
3x=6.3,
3x÷3=6.3÷3,
x=2.1;
(3)x-0.36x=9.6,
0.64x=9.6,
0.64x÷0.64=9.6÷0.64,
x=15;
(4)(x-5)÷2=7.5,
(x-5)÷2×2=7.5×2,
x-5=15,
x-5+5=15+5,
x=20;
(5)4x-4×8=34,
4x-32+32=34+32,
4x÷4=66÷4,
x=16.5;
(6)8(x-6.2)=42.4,
8(x-6.2)÷8=42.4÷8,
x-6.2=5.3,
x-6.2+6.2=5.3+6.2,
x=11.5.
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