1: 3w-10w
A.13w
B.-7w
C. -7
D. 7w
1. -7w
2. 2.2y+1.2z
3. 2r
4. 7x + 12
5. 18
3w-10w
= -7w
To simplify the expression 3w - 10w, you can combine the like terms.
First, let's rewrite the expression:
3w - 10w
Now, combine the like terms:
(3 - 10)w
Simplifying further, we get:
-7w
Therefore, the answer is B. -7w.
To simplify the expression 3w - 10w, you need to combine like terms. In this case, the like terms are the variables with the same exponent, which is w.
To combine like terms, you add or subtract the coefficients (numbers in front of the variables) while keeping the variable unchanged. Since both terms have w, we can combine them as follows:
3w - 10w = (3 - 10)w = -7w
Therefore, the simplified form of 3w - 10w is -7w.
So, the correct answer is B. -7w.