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Solve the equation 3x + 11 = 56

To begin this question, we need to subtract 11 from both sides. 

3x + 11 - 11 = 56 - 11

The two 11s on the left hand side cancel each other, while 56 - 11 = 45. 

Therefore, 

3x = 45

Now we need to divide both sides of the equation by 3 to find the value of x.

3x/3 = 45/3 

3x/3 = x while 45/3 = 15

Therefore x = 15. 

Melissa P. GCSE Maths tutor, 13 plus  Maths tutor, 11 Plus Maths tuto...

7 months ago

Answered by Melissa, a 13 Plus Maths tutor with MyTutor


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Melissa P.

Degree: Mathematics (Bachelors) - Birmingham University

Subjects offered: Maths, Spanish

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“About me:  I am currently studying for a Maths degree at the University of Birmingham. I have enjoyed Maths since I was very young and hope I can pass some of this on to you!  I am very friendly. I have been coaching gymnastics since...”

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