题目内容
解方程
| 5X+3X=64 | X-0.85X=30 | 8(X-1)=9.2 | 3X+7X+2.6=74. |
5X+3X=64,
8x=64,
x=8;
X-0.85X=30,
0.15x=30,
x=200;
8(X-1)=9.2,
x-1=9.2÷8,
x-1=1.15,
x=2.15;
3X+7X+2.6=74,
10x=74-2.6,
10x=71.4,
x=7.14.
8x=64,
x=8;
X-0.85X=30,
0.15x=30,
x=200;
8(X-1)=9.2,
x-1=9.2÷8,
x-1=1.15,
x=2.15;
3X+7X+2.6=74,
10x=74-2.6,
10x=71.4,
x=7.14.
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