Answer : x= -4
This type of problem, you set them equal to each other. And then solve. Don’t forget you can multiply each side by denominator to eliminate the fraction.
Work:
40 - 4 = 36
average = 36/9 = 4
answer
average number of members who joined the math club is 4 per month
That's a simple question.
Ans: If both numbers can be divided to equal a whole number, then it can be simplified.
Example: 35:7 (this is your ratio) divided by 7 = 5:1
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Kirk multiplied by 5.
-.25x • 4 = -1x
.2x • 5 = 1x
This causes the x terms to eliminate :)