The sum of three times of a number and 8 is 50. Find the number?
16
14
12
17
LHS of the equation 2(x - 3) = 5(2 x + 4) is
2
x-3
2(x - 3)
5(2x+4)
Twice of a number plus 7 is 18. Write a simple equation for this
x + 7 = 18
x - 7 = 18
2 x - 7 = 18
2 x + 7 = 18
2 x + 5 = k then x =
k - 5
k - 5/2
k + 5/2
k/2 - 5
A quantity which divides LHS of an equation ____ the RHS.
add
subtract
multiple
divides
A quantity with positive sign when taken to other side of the equation, then its sign becomes
+
x
÷
-
75o
70o
60o
65o
3 x + 8 = 3 x - k then k =
8
-8
6
-6
3 times a number exceeds 20 by 2. How do you represent this?
3 x +2 =20
3 x = 22
3 x = 16
3 x - 2 = 22
A number increased by 7 is represented as
x-7
7 x
x/7
7+x
