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### Grade 7 - Mathematics2.1 Value of an Expression - I

 Example: Find the value of expression 7x+9, when x=2. Solution: Substitute the value x=2 in the given equation: 7x+9 = 7*(2) + 9 =14 + 9 = 23. Therefore the value of the expression when x=2 is 23. Answer: 23 Directions: Solve the following expressions and show your work. Also write at least ten examples of your own.
 Q 1: Find the value of the expression 9x+11, when x=4.Answer: Q 2: Find the value of the expression 5x+10, when x=8.Answer: Q 3: Find the value of the expression 8x+15, when x=5.Answer: Q 4: Find the value of the expression 7x+50, when x=-3.Answer: Q 5: Find the value of the expression 10x+15, when x=3.Answer: Q 6: Find the value of the expression 8x+20, when x=3.Answer: Q 7: Find the value of the expression 6x+7 when x=3.Answer: Q 8: Find the value of the expression 2x+9, when x=2.Answer: Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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