Answer:
The answer is,
Step-by-step explanation:
Firstly, you have to get rid of fraction by multiplying (r-3) to both side and expand out:
t × (r-3) = r/(r-3) × (r-3)
rt - 3t = r
Then you have to move all the "r" variables to one side and other variables to the other side:
rt - r = 3t
You can make "r" as a subject by taking out the common term, you can see that the common term on the left is "r" so you can bring out:
r(t-1) = 3t
r = 3t/(t-1)
Kellie's original number given the analogy and corresponding equation is 13
<h3>How to write and solve equation?</h3>
let
(x × 2) × 3 = x + 65
2x × 3 = 65 + x
6x = 65 + x
6x - x = 65
5x = 65
x = 65/5
x = 13
check:
6x = 65 + x
6(13) = 65 + 13
78 = 78
Therefore, the unknown number, x is 13
Learn more about equation:
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-12i * 3i
= -12*3 *i*i
= -36i² but i² = -1
= -36*-1
= 36
Answer:
79400000
Step-by-step explanation:
(6x10 5) = 600000
(8x10 7) = 80000000
80000000 - 600000 = 79400000
Answer:
X= 14
Step-by-step explanation: