25 = 5*5
405 = 81*5
therefore, 25/405 = (5*5)/(81*5)=5/81
<span>(2a)^3 =8a^3
hope it helps</span>
The least common multiple for 3, 4, 5, 6, 10, and 15 is 60.
Answer:
a) 44
b) 11
c) 4
Step-by-step explanation:
a) x + 46 = 90
x = 90 - 46
x = 44
b) 9x + 81 = 180
9x = 180 - 81
9x = 99
x = 11
c) (5x + 30) + 40 = 90
(5x + 30) = 90 - 40 = 50
5x + 30 = 50
5x = 50 - 30
5x = 20
x = 4
