题目内容
解方程:
(1)15+x=36
(2)4x-1.2×6=8.8
(3)2x+
x=27.
(1)15+x=36
(2)4x-1.2×6=8.8
(3)2x+
| 1 |
| 4 |
(1)15+x=36,
15+x-15=36-15,
x=21;
(2)4x-1.2×6=8.8,
4x-7.2+7.2=8.8+7.2,
4x÷4=16÷4,
x=4;
(3)2x+
x=27,
2.25x=27,
2.25x÷2.25=27÷2.25,
x=12.
15+x-15=36-15,
x=21;
(2)4x-1.2×6=8.8,
4x-7.2+7.2=8.8+7.2,
4x÷4=16÷4,
x=4;
(3)2x+
| 1 |
| 4 |
2.25x=27,
2.25x÷2.25=27÷2.25,
x=12.
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