Answer:
3 and 1
Step-by-step explanation:
The answer would be 13.89
explanation :
8x + 7y + 4 - 6x + 15y + 16
then, equate denominator
8x - 6x +7y + 15y + 4 + 16
the answer is
2x + 22y + 20
hope this will help you
Answer:
The Number is -8.
Step-by-step explanation:
Let the number be x.
Now given:
A number decreased by twelve;
It means 12 is subtracted from the number.
Hence the equation can be framed as;
Also given;
twice the opposite of ten
Opposite of 10 = -10
Twice the opposite of 10 means 2 is multiplied with opposite of 10.
Hence twice the opposite of ten =
Now A number decreased by twelve is twice the opposite of ten
framing it in equation form we get;
Solving the above equation we get;
Hence the Number is -8.
Answer:
Step-by-step explanation:
Two equations are 3x + y = 9 ------------(1)
and 3x - 5y = 15 ----------(2)
we have to calculate the value of x common for both.
We multiply equation 1 by 5 and add it to equation 2
15x + 5y = 45
3x - 5y = 15___
18x = 60
x = 60/18 = 10/3