Evaluate Expressions Step by Step

5 questions0m 0s

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Replace every occurrence of the variable with its given value. Calculate parentheses first, then multiplication or division, then addition or subtraction.

Worked example

If x = 5, then 3x + 4 means 3 x 5 + 4 = 15 + 4 = 19. It does not mean 3 x (5 + 4).

A flow diagram starts with x equal to five, multiplies by three to get fifteen, then adds four to get nineteen. It represents the expression three x plus four. — Follow the operations in the expression. Parentheses would change which calculation comes first.

Question 1 If x = 7, what is 4x + 3? Answer

Question 2 If n = 6, what is 2(n + 5)? Answer

Question 3 If a = 4 and b = 3, what is 3a - b? Answer

Question 4 If t = 3, what is 5(t + 2)? Answer

Question 5 If p = 18, what is p / 3 + 2? Answer