解方程 2(x-2.6)=8
解方程2(x-2.6)=8(x-3)÷2=7.513.2x+9=33.3x-0.36x=163.8+x=6.3x÷8≒0.4....
解方程 2(x-2.6)=8 (x-3)÷2=7.5 13.2x+9=33.3 x-0.36x=16 3.8+x=6.3 x÷8≒0.4.
展开
展开全部
(1)2(x-2.6)=8,
2x-5.2=8,
2x-5.2+5.2=8+5.2,
2x=13.2,
2x÷2=13.2÷2,
x=6.6;
(2)(x-3)÷2=7.5,
(x-3)÷2×2=7.5×2,
x-3=15,
x-3+3=15+3,
x=18;
(3)13.2x+9=33.3,
13.2x+9-9=33.3-9,
13.2x=24.3,
13.2x÷13.2=24.3÷13.2,
x=1
;
(4)x-0.36x=16,
0.64x=16,
0.64x÷0.64=16÷0.64,
x=25;
(5)3.8+x=6.3,
3.8+x-3.8=6.3-3.8,
x=2.5;
(6)x÷8=0.4,
x÷8×8=0.4×8,
x=3.2;
2x-5.2=8,
2x-5.2+5.2=8+5.2,
2x=13.2,
2x÷2=13.2÷2,
x=6.6;
(2)(x-3)÷2=7.5,
(x-3)÷2×2=7.5×2,
x-3=15,
x-3+3=15+3,
x=18;
(3)13.2x+9=33.3,
13.2x+9-9=33.3-9,
13.2x=24.3,
13.2x÷13.2=24.3÷13.2,
x=1
37 |
44 |
(4)x-0.36x=16,
0.64x=16,
0.64x÷0.64=16÷0.64,
x=25;
(5)3.8+x=6.3,
3.8+x-3.8=6.3-3.8,
x=2.5;
(6)x÷8=0.4,
x÷8×8=0.4×8,
x=3.2;
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询