Answer:
a. 0.69x + 0.14
b. 5.67 - 30.48a
c. 1.1x - 3.01y
Explanation:
a) 2.56x + 0.14 − 1.87x
To simplify this algebraic expression, you start by collecting like terms;
2.56x − 1.87x + 0.14
Then perform arithmetic operation
0.69x + 0.14
b) 7.32a + 2.1 (2.7 − 18a)
Here; first, the bracket must be opened
To open the bracket; each expression in the bracket is multiplied by 2.1. This leaves us with
7.32a + 2.1 * 2.7 − 2.1 * 18a
7.32a + 5.67 - 37.8a
Then, you collect like terms
7.32a - 37.8a + 5.67
Then perform arithmetic operation
-30.48a + 5.67
Rearrange
5.67 - 30.48a
c) 0.12x + 0.34y + 0.98x − 3.35y
Here, you start by collecting like terms
0.12x + 0.98x + 0.34y − 3.35y
Then perform arithmetic operation
1.1x - 3.01y