# [Quiz] Addition and subtraction of algebraic expressions with one or more variables

Welcome to Math Quiz number 39. These are grade (class) 6 questions based on algebraic expressions with one or more variables. These questions check students’ understanding of addition and subtraction mathematical operations of algebraic expressions comprising one or more variables. Please comment if you find the wrong answers. Have fun!!!

1.
Simplify the expression: 3x + 3y + (6x - 7y)

2.
Simplify the expression: 7x - 3y + 3z + (2y + 3z)

3.
Simplify the expression: 4x - 4y + (7x + 6y)

4.
Simplify the expression: 3y + 3z - (7k - 2m)

5.
Simplify the expression: 13x + 12y - (5y - 3x)

6.
Simplify the expression: 23y - 10z - (5x - 10y)

7.
Simplify the expression: 7x + 12y -10z + (3y - 5z)

8.
Simplify the expression: 12x - 15y - (16z - 10x)

9.
Simplify the expression: -15x + 15y + (20z - 10y)

10.
Simplify the expression: -16x -18y - (15y + 16z -16x)

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