Simplifying:
2n-21=0.25n
We move all terms containing n to the left and all other terms to the right.
+2n-0.25n=+21
We simplify left and right side of the equation.
+1.75n=+21
We divide both sides of the equation by 1.75 to get n.
n=12
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Answer:
#3 is 40
#4 is 90
Step-by-step explanation:
77 times 100 is 7,700. So your answer is 7,700
