Question

a) Look at this expression.
4a + 5 + 4a
Select the expression below that shows it written as simply as possible.
8(a + 5)
A
13a
B.
5
С
8a + 5
D
20a
E
b) Look at this other expression. 2c + 6 + 3c-4
Simplify this expression as much as possible.

Answer 1

Answer:

A) The answer is D, 8a + 5

4a + 5 + 4a

we simplify this expression(combine like terms):

group them first;

(4a + 4a) + 5

8a + 5

B) 2c + 6 + 3c - 4

simplify this expression (combine like terms):

group them first;

(2c + 3c) + (6 - 4)

5c + 2

Answer 2

Answer:

1.$8a+5$
2.$5c+2$

Step-by-step explanation:

Given the following questions:

$4a+5+4a$
$2c+6+3c-4$

In order to simplify the two expressions, we have to group the terms that have similar variables, and then combine those terms by adding/subtracting the numbers that have the similar variables.

Number one:
$4a+5+4a$
$4a+4a+5$
$4a+4a=8a$
$8a+5$

Number two:
$2c+6+3c-4$
$2c+3c+6-4$
$2c+3c=5c$
$5c+6-4$
$6-4=2$
$5c+2$

Hope this helps.