Answer:
Step-by-step explanation:
Answer:
(A) the subtraction property of equality
Step-by-step explanation:
Given
The steps in the question
Require
Justify step 2 to 3
Write out step 2:
Apply subtraction property by subtracting 2x from both sides
Notice that the above equation is represented in step 3.
<em>Hence, option A answers the question.</em>
The answer is 5. use a calculator
Answer:
x = 535 + 3/4n Over 8 --> Or in simplified form --> 66.875 + 3/32n
y = -166 / 3-4n
Step-by-step explanation:
1-) To find y, we will have to get rid of x in one of the equation.
So, we will multiply first equation by -4.
> -4 ( 2x + ny ) = -4 ( 51 )
> -8x - 4ny = -204
Then we will use the elimination method.
> -8x - 4ny = -204
8x + 3y = 38
+ -----------------------
> 3y - 4ny = -166
To isolate y, we will factor it out.
> y ( 3 - 4n ) = -166
Finally, we will divide ( 3 - 4n ) from both sides to achieve our desired result that the question asks.
> y = -166 / 3 - 4n
2-) To find x, we will substitute our y result into the second equation.
> 8x + 3 ( -166 / 3 - 4n ) = 38
> 8x - 498 + 1 - 3/4n = 38
> 8x - 497 - 3/4n = 38
> 8x - 3/4n = 535
> 8x = 535 + 3/4n
> x = 535 + 3/4n Over 8
> x = 535/8 + 3/32n
> x = 66.875 + 3/32n
It looks messy but I hope it will be understood.
If I have any inaccuracies please let me know.
Have a nice day and never stop questioning!
Answer:
first read questions carefully
than ,
apply various logic and formulas and rules to it