Solve the Inequation
If n=15 solve
(n-12) x 3 =
9
2n + 4 = 22
n = 9
Twice the number and increased by four
2n + 4
(3m + 2m) - (4m - m)
2m
if n = 45 solve
(n-12) x 3 =
99
5n - 42 = 13
n = 11
Half of a number that was ALREADY increased by 5
(n+5)/2
(a + a + b) + (b + a)
3a + 2b
if n = 7.5 solve
(n-12) x 3 =
-13.5
(n + 4) x 15 = 150
n = 6
Triple a number and reduced by 3
3n - 3
(2n + y) + (n + 3y)
(3n + 4y)
if n = 142 solve
(n-12) x 3 =
390
7.5n + 52 = 58.75
n = 4.5
The sum of 3 consecutive numbers beginning with x
x + (x+1) + (x+2)
(3n + 3b)
if n = -83.2 solve
(n-12) x 3 =
-285.6
(n-7)/3 + 7.2 = 14.2
n = 28
The average of 12, x, 4 and 17
(12 + x + 4 + 17)/4
(4.2n - 3a + 11.3) + (6.4 - 7.5n + 4a)
(17.7 + 1a - 3.3n)