Factor
5y + 30
5(y+6)
3(x+5)
3x+15
Solve for a
Resuelve por a
2a = 46
a = 23
A(n) _________________ is an unknown part of an equation, represented by a letter.
What is a variable?
11r + 66
11(r+6)
7(3+4n)
21+28n
Solve for b
Resuelve por b
b ÷ 3 = 60
b= 180
Fern has 7 red pens and b blue pens. How many pens does Fern have?
What is "7 + b" pens?
90+30s
30 (3+s)
10(9+3s)
(5a-2b) x 4
20a - 8b
15 * x = 75
What is "x = 5"?
10-32 =
1
73
343
7 x 7 x 7
7w+28y-56
7(w+4y-8)
5(6b +7g - 3b)
15b +35g
(10 - 2) x 5
40
3+9²=
84
the answer to a subtraction problem is a(n) ______________.
What is the difference?