Question

What is the result of subtracting 1.4m 3.7n 1 from 2.3m-1.2n?

1) -0.9m 4.9n 1
2) 0.9m-2.5n-1
3) 0.9m-4.9n-1
4) I don't know

Answer 1

The result of subtracting the given expressions 1.4m 3.7n 1 from 2.3m-1.2n is 0.9m - 4.9n - 1, which is option 3.

Step-by-step explanation:

The result of subtracting 1.4m + 3.7n + 1 from 2.3m - 1.2n is obtained by subtracting each term of the second expression from the corresponding term of the first expression. We subtract the coefficients of like terms and keep the variable part unchanged.

For the 'm' terms: 2.3m - 1.4m = 0.9m

For the 'n' terms: -1.2n - 3.7n = -4.9n

For the constant terms: 0 - 1 = -1

Therefore, the result is 0.9m - 4.9n - 1, which corresponds to option 3) 0.9m - 4.9n - 1.