Question

Which expression is equivalent to 3m+1-m?

A. 2+m-1+m

B. 1+m

C. 3m-1

D. 3m

Answer 1

a

Explanation:

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Answer 2

option (a) is correct.

2 + m - 1 + m is an equivalent expression to the given expression 3m+1-m

Explanation:

Given expression 3m+1-m

We have to choose an equivalent expression from given options.

Equivalent expression are those expression that looks different but are same.

Like 4+2 = 6 and 3+ 3 = 6

Both have same value but looks differently.

Like terms are term having same variable with same degree.

Consider the given expression 3m+1-m

Simplify by adding like terms,

3m + 1 - m = (3-1) m + 1

Thus, (3-1) m + 1 = 2m + 1

Also 2m + 1 can be written as m + m + 2 - 1

Thus, option (a) is correct.