27-11-2014
Mathematics

Answered

what is the mistake in this problem?

what is the mistake in this problem class=

Answer :

Porshia Porshia

27-11-2014

You didn't multiply the 3 by 4 on step number 3. Your new problem should have been -4x +12=x + 4. You then move the variable term by adding 4x to each side. Your new problem is 12=5x + 4. Then, remove the constant by subtracting 4 on each side. Your new problem is 8=5x. Your answer is x=1 3/5 or 1.6

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