lunapalma98 lunapalma98

13-12-2017
Mathematics

contestada

andrea was given the following equation to solve , 5x - 2 = 2x + 7 , she decided to combine the 5x and 2x on the left side , leaving her with 7x - 2 = 7 , explain to andrea the minor error she made by combining 5x and 2x to make 7x in this situation .

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wuddlyone wuddlyone

13-12-2017

When she decided to combine the 5x and 2x she would have been subtracting the 2x leaving her with 3x-2=7which is 3x=9, x=3

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