Girardo is using the model below to solve the equation 3 x + 1 = 4 x + (negative 4). 3 long green tiles and 1 green square tile = 4 long green tiles and 4 red square tiles Girardo uses the following steps:
Answers
Given : Girardo is using the model below to solve the equation 3 x + 1 = 4 x + (negative 4). 3 long green tiles and 1 green square tile = 4 long green tiles and 4 red square tiles
To find : how to solve
Solution:
3 long green tiles and 1 green square tile = 4 long green tiles and 4 red square tiles
3x + 1 = 4x + (-4)
Step 1 :
Subtract 3 long green tiles from both sides
=> 1 green square tile = 1 long green tiles + 4 red square tiles
=> 1 = x + (-4)
Step 2 :
Add 4 green tiles to both sides or subtract 4 red tiles both side
=> 5 green square tile = 1 long green tiles
=> 5 = x
Hence x= 5
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Answer:
B on edge
Step-by-step explanation: