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evaluating expressions
substitute numbers sfor variables
10
Mathematics
9th Grade
07/23/2013
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Term
What is (x+3) if x = 2
 Definition
(2+3)=5
Term
What is (2x) if x = 4
 Definition
(2 x 4)=8
Term
What is (2x+8) if x = 1?
 Definition
((2 x 1) + 8)=2 + 8=10
Term
What is (5-x) if x = -3?
 Definition
(5- -3)= (5+3)=8
Term
What is (12-5x) if x = 7?
 Definition
(12-5x7)=(12-35)=-23
Term
What is (y+7) if y=6?
 Definition
(6+7)=13
Term
What is 3x+6y if x = 3 and y = 4?
 Definition
(3 x 3) + (6 x 4)= 9 + 24 = 33
Term
What is 5y-x if x = -2 and y = 3?
 Definition
(5 x 3)-(-2) = 15 + 2 = 17
Term
What is 4x-3y if x = -7 and y = -3?
 Definition
(4 x -7) - (3 x -3)= -28 - -9 = -28 + 9= 19
Term
What is -4x + 7y if x = 0 and y = -6?
 Definition
(-4 x 0) + (7 x -6)= 0 + -42 = -42
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