题目内容
解方程:
| x+16=35 | 0.5+4.5x=45.5 | 3.8x-0.8x=27. |
(1)x+16=35,
x+16-16=35-16,
x=19;
(2)0.5+4.5x=45.5,
0.5+4.5x-0.5=45.5-0.5,
4.5x÷4.5=45÷4.5,
x=10;
(3)3.8x-0.8x=27,
3x=27,
3x÷3=27÷3,
x=9.
x+16-16=35-16,
x=19;
(2)0.5+4.5x=45.5,
0.5+4.5x-0.5=45.5-0.5,
4.5x÷4.5=45÷4.5,
x=10;
(3)3.8x-0.8x=27,
3x=27,
3x÷3=27÷3,
x=9.
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