Step-by-step explanation:
first you have to take all similar variable on the same side of the equation and the constants on the other side then solve the question .
example : -12x + 9 = -15x
-12x +15x = -9
3 x = -3
X = -3/3= -1
x = -1
like this you can solve all the other equation ..
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You could just use 3.14 or 22/7
Answer:
-1/2
Step-by-step explanation:
Answer:
5280people
Step-by-step explanation:
Given parameters:
Percentage increase of population = 25%
Population now = 6600
Unknown:
Population last year = ?
Solution:
Let the population last year = y;
Then;
Percentage of last years population plus the population of last year should give us this year's population;
(
of y) + y = 6600
0.25y + y = 6600
1.25y = 6600
y =
= 5280people
Last year, there was 5280people in the locality.