Everyone knows this!
Is X the only letter that can represent the answer?
No
3x + 5 = 14
x = 3
-4x + 7 = -9
x =4
4(7x + 1) = -220
x = -8
What are all the operations?
Addition, subtraction, multiplication, and division.
2x + 8 = 18
x = 5
- 2x - 12 = - 20
x = 4
1 + 2k = -11 + 4k + k
k = 4
What operation must I DO first in the equation 3x -5 = 25?
Add 5 to both side of the equation
7x + 3 = 24
x = 3
-10x - 12 = -72
x = -6
-14 = x/4 - 7
x = -28
What operation must I DO second in the equation 3x - 5 = 25
Divide by 3 on both sides.
5x - 18 = -3
x = 3
-45 + 8x = -112
x = -7
(1/5)x + 35 = -15
x = -250
What strategy may we use when adding or subtracting integers in an equation?
Write D.S.S, S.S.A, or KCC.
12x - 30 = -102
x = -6
-500 = 30 - 8x
x = 66.25 or 66 and 1/4
-24 = -x/5 - 9
x = 75