Why did you do this 60x-10(30-x) ?
Why can't it be 60x+10(30-x) ?
Answers
Answered by
6
because when the 10 will be multiplied by other ones than the whole value will come in minus of the bracket.
That's why
Answered by
2
Answer:
In first equation if 30-x is any value so by the - 10 it will opposite sign to other equitation
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