B is the answer.
You can tell this by the series of translations. But you can also try in values to see which satisfy the equation.
Simplifying
4x + 16 + -1x = 22 + 6
Reorder the terms:
16 + 4x + -1x = 22 + 6
Combine like terms: 4x + -1x = 3x
16 + 3x = 22 + 6
Combine like terms: 22 + 6 = 28
16 + 3x = 28
Solving
16 + 3x = 28
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-16' to each side of the equation.
16 + -16 + 3x = 28 + -16
Combine like terms: 16 + -16 = 0
0 + 3x = 28 + -16
3x = 28 + -16
Combine like terms: 28 + -16 = 12
3x = 12
Divide each side by '3'.
x = 4
Simplifying
x = 4
Step-by-step explanation:
Carmen's water bottle = 1.8 litres ≈ 2 litres
Jorge's water bottle = 2
= 2.4 litres ≈ 2 litres
Therefore, from estimate, Jorge's water bottle<u> does not</u> hold half litre more of water than Carmen's.
<u>Actual difference</u> = 2.4 - 1.8 = 0.6 litres
The answer to the first one is D. I'm not sure on the second one.