2 years ago

Girardo is using the model below to solve the equation 3x+1=4x+(-4)

Mathematics

2 answers:

svp [43]2 years ago

6 0

Answer:

Step-by-step explanation:

$3x+1=4x+(-4)\qquad\text{subtract}\ 4x\ \text{from both sides}\\\\3x-4x+1=4x-4x-4\\\\-x+1=-4\qquad\text{subtract 1 from both sides}\\\\-x+1-1=-4-1\\\\-x=-5\qquad\text{change the signs}\\\\x=5$

belka [17]2 years ago

5 0

Answer:

The answer is B. In step one he should have added 3 negative x-tiles to both sides.

Step-by-step explanation:

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