How do you solve for y in #3x+5y=7#?

2 Answers
Jan 23, 2016

Answer:

# y = 1/5 (7 - 3x ) #

Explanation:

To find y place the other terms in the equation to the right

hand side of the equation.

Thus : 5y = 7 - 3x

( now divide both sides by 5 )

# rArr cancel(5) y/cancel(5) = (7 - 3x )/5 = 1/5 (7 - 3x ) #

Jan 23, 2016

#3x+5y=7#

Subtract #color(blue)(3x)# from both sides.

#implies 3x-color(blue)(3x)+5y=7-color(blue)(3x)#

#implies 5y=7-3x#

Divide both sides by #color(red)5#

#implies (5y)/color(red)5=(7-3x)/color(red)5#

#implies y=7/5-(3x)/5#