题目内容
解方程
| 1.8x=2.16 | 2(x+1.7)=9.2 | 2x-0.24=0.12 |
(1)1.8x=2.16,
1.8x÷1.8=2.16÷1.8,
x=1.2;
(2)2(x+1.7)=9.2,
2(x+1.7)÷2=9.2÷2,
x+1.7-1.7=4.6-1.7,
x=2.9;
(3)2x-0.24=0.12,
2x-0.24+0.24=0.12+0.24,
2x=0.36,
2x÷2=0.36÷2,
x=0.18.
1.8x÷1.8=2.16÷1.8,
x=1.2;
(2)2(x+1.7)=9.2,
2(x+1.7)÷2=9.2÷2,
x+1.7-1.7=4.6-1.7,
x=2.9;
(3)2x-0.24=0.12,
2x-0.24+0.24=0.12+0.24,
2x=0.36,
2x÷2=0.36÷2,
x=0.18.
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