用递等式计算:(2108-634*?)/56=15
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用递等式计算:(2108-634*?)/56=15
![用递等式计算:(2108-634*?)/56=15](/uploads/image/z/4942435-67-5.jpg?t=%E7%94%A8%E9%80%92%E7%AD%89%E5%BC%8F%E8%AE%A1%E7%AE%97%3A%282108-634%2A%3F%29%2F56%3D15)
(2108-634x)/56=15
两边同乘以56得:
2108-634x=840
634x=2108-840
634x=1268
x=1268÷634
x=2
两边同乘以56得:
2108-634x=840
634x=2108-840
634x=1268
x=1268÷634
x=2