Answer:
-4x-31
Step-by-step explanation:
1) Distribute:
(-13x-15)+(9x-16)
2) Eliminate parenthesis that are not useful:
-13x-15+9x-16
3) Subtract the numbers:
-13x-31+9x
4) Combine like terms:
-4x-31
Hope this helped!
Answer:
3
Step-by-step explanation:
The slope is the coefficient to the x variable.
In the equation y = 3x, this means 3 is the slope because it is the coefficient to x.
So, the slope is equal to 3.
Answer:
2.4
Step-by-step explanation:
3 3/4 = 3.75
9/3.75 = 2.4

First, add the fractions because they already have a common denominator.

3 plus 1 equals 4. The fractions make 3/3 which equals 1. 4 plus 1 equals 5.

Your answer is 13.
Hope this helps!
:)
Step-by-step explanation:
Here, The work of a student to solve the equation :

The steps for calculating the value of x are :
Step 1: 4(2x − 4) = 8 + 2x + 8
Step 2: 6x − 8 = 16 + 2x
Step 3: 6x − 2x = 16 + 8
Step 4: 4x = 24
Step 5: x = 6
Step 2 is incorrect, as the student instead of multiplying, adds the number as :
4(2x − 4) = 8 + 2x + 8
Here, the correct step is :
8x − 16 = 16 + 2x
6 x = 32
x = 5.33
So, the error is in STEP 2 and the correct option is (b).