Question

:xxxx

11
-1 -1
-11
1 11
1 1 1 1 1 1
The model represents an equation. What value of x makes the equation true?
A)
29
8
B)
29
2.
29
2
D)
-
29
8

Answer 1

• 5x+9(-1)=3x+20
• 5x-9=3x+20
• 5x-3x=20+9
• 2x=29
• x=29/2

Answer 2

• B. 29/2

Explanation:

The model represents the following equation:

• x*5 + (-1)*9 = x*3 + 20*1
• 5x - 9 = 3x + 20
• 5x - 3x = 20 + 9
• 2x = 29
• x = 29/2

Correct choice is B