How do you solve #-3( y + 1) + 7y = 4( y + 1) - 7#?

1 Answer
Mia
Nov 14, 2016

Infinite number of solutions for every #" "y in RR" "#

Explanation:

Solving this equation is determined by expanding it ,then adding
#" "#
unknowns in one side and the knowns to the second side.
#" "#
#" "#
#-3(y+1) + 7y = 4(y + 1) - 7#
#" "#
#rArr-3y - 3 +7y = 4y + 4 -7#
#" "#
#rArr-3y +7y -4y = 3 +4 -7#
#" "#
#rArr-7y + 7y = 7-7#
#" "#
#rArr0y = 0#

This equation exists for every #y in RR#

Hence, infinite number of solutions, for any value of #" " y in RR" "#

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