Current location - Training Enrollment Network - Mathematics courses - Tintin is calculating (? +4)×25 What is the calculation error of this question? +4×25, the result is 48 less than the correct answer, and then what? What is the meaning of this?
Tintin is calculating (? +4)×25 What is the calculation error of this question? +4×25, the result is 48 less than the correct answer, and then what? What is the meaning of this?
Hello!

(? +4)×25=25×? +4×25=25×? + 100

+4×25=? + 100

(? +4)×25-? -4×25=48

24×? =48

So what? =48÷24=2

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