Math
100

Seven plus five equals…

What is 12?

200

There are three rows and seven columns of desks. How many desks are there?

What is 21 desks?

300

.4 times .5 is..?

What is .2?

400

3x-7=(5x+10)2-55, what does x equal to?

What is 4?

500

y=x2-6x−18. x<0, what does x equal to?

What is -3?

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