Solve the equation 3x - 7y = -28 for y?
1 Answer
Feb 1, 2018
#y=4+(3x)/7#
Explanation:
Given -
#3x-7y=-28#
Add#-3x # to both sides
#3x-3x-7y=-28-3x#
#cancel(3x)cancel(-3x)-7y=-28-3x#
#-7y=-28-3x#
Multiply both sides by#-1#
#(-7y)(-1)=(-28-3x)(-1)#
#7y=28+3x#
Divide both sides by#7#
#(7y)/7=28/7+(3x)/7#
#(cancel7y)/(cancel7)=(cancel28 4)/cancel7+(3x)/7#
#y=4+(3x)/7#
