题目内容
| 解方程. x+4.8x=23.2 | 8.5x+5.5x=350 | (x-3)÷4=7.5. |
(1)x+4.8x=23.2,
5.8x=23.2,
5.8x÷5.8=23.2÷5.8,
x=4;
(2)8.5x+5.5x=350,
(8.5+5.5)x=350,
14x=350,
14x÷14=350÷14,
x=25;
(3)(x-3)÷4=7.5,
(x-3)÷4×4=7.5×4,
x-3=30,
x-3+3=30+3,
x=33.
5.8x=23.2,
5.8x÷5.8=23.2÷5.8,
x=4;
(2)8.5x+5.5x=350,
(8.5+5.5)x=350,
14x=350,
14x÷14=350÷14,
x=25;
(3)(x-3)÷4=7.5,
(x-3)÷4×4=7.5×4,
x-3=30,
x-3+3=30+3,
x=33.
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