Question

Which of the following values of y will result in a true statement when substituted into the given equation?

y + 4.2 = 3.4

A. y = -0.8
B. y = 2.2
C. y = 4.3
D. y = 5.2

Answer 1

A, y = -0.8

Explanation:

To solve this, you have leave the y alone.

Subtract 4.2 from both sides.

y + 4.2 - 4.2 = 3.4 - 4.2

y = 3.4 - 4.2

y = -0.8

Answer 2

A. -0.8

Explanation:

non of the other answers will work because they are positive.