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Find the value of x that makes the expression equivalent. (35 points)

7(8 - x); 56 - 21

User Jarandinor
by
8.6k points

2 Answers

3 votes

Answer: x=3

Explanation:

7(8-x)=56-21

56-7x=35

-56 -56 (subtract 56 from both sides)

-7x=-21

/-7 /-7 (divide each side by -7)

x=3

User Walter Northwoods
by
8.9k points
3 votes

Answer:

x=3

Explanation:

7(8-x)=56-21

Distribute the 7

7*8 -7x = 56-21

56 - 7x = 56-21

Since there is a 56 on each side , subtract 56 from both sides

56-56 - 7x = 56-56-21

-7x = -21

Divide each side by -7

-7x/-7 = -21/-7

x =3

User MichaelCMS
by
7.9k points

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