Question

Which of the following equations is the result after the first step in solving 5x – 4 = 15?

A 5x = 19
B x = 2
C 5x = 11
D x – 4 = 3

Answer 1

[A] 5x = 19

Explanation:

Solving to see first step:

5x - 4 = 15

+4 +4 {15 + 4 = 19}

-------------------------

5x = 19

Divide both sides by 5

5x/5 = 19/5

x = 19/5

x = 3.8

As you can see 5x = 19 is the first step result after solving.

~Lenvy~

Answer 2

[A} 5x = 19

Explanation:

Let's solve to see what the first step in solving the following equations:

5x - 4 = 15

Add 4 to both sides

5x - 4 + 4 = 15 + 4

5x = 19 {First step after solving}

Divide both sides by the same factor

5x/5 = 19/x

x = 3.8

Thus, the answer is [A] 5x = 19

Kavinsky