3x
Are 10 - 20 and 5(2 - 20) equivalent expressions? Explain.

No.

Step-by-step explanation:

Take the second expression: 5(2 - 20)

To solve, you must distribute the 5 to all terms within the parenthesis:

5(2 - 20) = (5 * 2) - (5 * 20) = 10 - 100 = -90

On the other hand:

10 - 20 = -30

∴ the two expressions are not equivalent.

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7