Fun with Vocab
In the expression 5x + 7 what is the variable?
x
-17+ 10
-7
(-4)(3)
-12
3x + 4x
7x
6 + 3 x 4
18, multiply first then 6+12= 18
In the expression 8x - 3, what is the coefficient?
8
-3 - 9
-12
-6(-5)
30
5x + 3 + 2x+ 4
7x + 7
(8-3) x 2
10
In the expression 4x + 9 - 2x, what is the constant?
9
-5-(-21)
16
-48/6
-8
8x - 3x + 6 - 10
5x - 4
18÷3+22
10
Why can 3x and 7x be combined, but 3x and 7 can not be combined?
3x and 7x have the same variable, while 7 is a constant with no variable
-15 - 8 + 20
-3
(-32)/(-4) x (-2)
-16
-4x + 7 + 9x - 12 - 3x
2x - 5
5+ 2(6-3)2 ÷3
11
In the expression 7x - 4 + 3x + 9, identify the variable, coefficient, and constants. Then explain which terms are like terms.
Variable: x
Coefficients: 7 and 3
Constants: -4 and 9
Like terms: 7x and 3x; -4 and 9
-8 + 7 - (-6) - 12
-17
(−5)(−4)÷2 x 3
30
8x + 5 - 3x + 7 - 2x - 9
3x + 3
24÷(2+4)×3−5
7