18-(6+2)/2
14
4(r+4) =8
r=-2
x/10 = 3/5
x=6
Twice a number
2x
f(x)= -3x2+ 7x - 5 f(2)
-3
23 + 3(8-4)
20
3(2w+5)-4w =45
w=15
are they equal to each other?
4/3 , 6/8
no
Five less than two times a number
2x-5
Find the perimeter
a rectangle with length 9cm and width 3cm
24cm
(6-4)2 + 8(8-5)/4
10
8x-10 = 3(6-2x)
x=2
9b-3 /9 = 5b+5 /3
-3
Five times a number increased by 2
5x+2
Find the perimeter
a triangle with sides 4ft, 13ft and 12ft
29ft
108/[3(9+32)]
2
6(3a+1)-30 = 3(2a-4)
a=1
4v+7 /15 = 6v+2 /10
0.8
Five less than the quotient of a number and 2
x/2 - 5
a=-1, b=4, c=6
4a+9b-2c
20
25+[(16-3*5) + (12+3)/5]
29
6(5m-3) = 1/3 (24m+12)
m=1
2n-4 /5 = 3n+3 /10
11
one-half of a number
1/2x
A triangle has sides with lengths in centimeters that are consecutive even integers. Find the lengths if the perimeter is 186 cm.
The sides of the triangle are 60cm, 62cm, and 64cm.