Question

Rearrange each of the following formula so the pronumeral in the bracket becomes the subject of the equation

3x+y=5 (Y)

Answer 1

y = 5 - 3x

Explanation:

3x + y = 5 ( subtract 3x from both sides )

y = 5 - 3x

Answer 2

y = 5 - 3x

making y the subject:

• 3x + y = 5

• y = 5 - 3x

changing sides, changes positive (+) sign to negative (-)

changing sides, changes negative (-) sign to positive (+)