3x + 4 = 46 Do/Undo (inverse operations)?

1 Answer
MAXIMILIAN C.
May 2, 2018

#x=14#

Explanation:

#3x+4=46# Subtract #4# from both sides:
#3x+4-4=46-4# Combine like terms:
#3x=42# Divide both sides by #3#:
#(3x)/3=42/3# Simplify:
#x=14# Now working backwards; multiply both sides by #3#:
#(3)x=(3)14# Simplify:
#3x=42# Add #4# to both sides:
#3x+4=42+4# Combine like terms:
#3x+4=46#

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