The sum of three and four tenths and a number is six and six tenths.

Step-by-step explanation:

The sum (+) of three and four tenths () and a number (x) is (=) six and six tenths ()

Subtract

In this case, because the first mixed number has a greater fraction than the second mixed number, we can subtract whole numbers and fractions individually.

When you have fractions with like denominators, keep the same denominator and subtract numerators.

If you are required to simplify;

2/2=1

10/2=5

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

whatvare the choices

step-by-step explanation: