Grade 7 math problem score - Training Enrollment Network

Grade 7 math problem score

Haha, I'm a freshman, too!

Solution: The original formula = (2a-a-1)+(a+1) (a-1) ╱ (a-1)

=(a- 1)+(a+ 1)

=2a

Note: "╱" indicates a semicolon.

A=2, the original formula =2a=4.

Hope to adopt! ! ! thank you

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