3 years ago

1. (2 points) Solve each equation and write the answer on the line

1 answer:

4 0

Hello there! So, by looking at the numbers, there are eighteen tens being compared to 21 * (5 + 5). Eighteen tens is equivalent to 180, because tens = 10, and 18 * 10 is 180. To solve 21 * (5 + 5), we first add what's in the parenthesis. 5 + 5 is 10. 21 * 10 is 210. And as we see, 180 < 210, because the one in the hundreds place is less than the two in the hundreds place. The answer is eighteen tens < 21 * (5 + 5).

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$\begin{array}{cccl}\dfrac{1}{x} & = & \dfrac{190}{570} & \\\\570 & = & 190x & \text{Mutiplied by lowest common denominator (570x)}\\3 & = & x & \text{Divided each side by 3}\\\end{array}$

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