1) Simplify:
4 x 2a
7 x 9m
9 x 5s
5 x 7x
2) Simplify:
8 x 2a +a
6 x 4m + 3m
2 x 5a + 3 x 4a
5 x 3s - 2 x 7s
3) Simplify:
11 x 2t +3 x 4y - 5 x 6t - 5 x 5y
8 x 4g - 2 x 3h - 2 x 3h - 2 x 5h -2 x 3g
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well to obtain the answers, you would first have to present the questions.
Mainly algebra.
I am in 7th grade and I am learning pre-algebra but in my school we learn a grade ahead so I think its not normal for people to learn pre-algebra in 7th grade, but its possible.
6
Usually around 8-9th grade, but if you struggle, maybe in your sophomore year.