-3 . This is because if you divide any negative number by a positive number, you'll always get a negative answer.
Find a way to turn the fraction into a whole number so it will be easier to multiply, add, etc.
n has a negative exponent, so you need to rewrite the expression using the negative exponent rule b^-n = 1/b^n
(m^8 1/n^4)^1/4
Now make m^8 a fraction buy giving it a denominator of 1:
(m^8 / 1 1/n^4)^1/4
Multiply the fractions together to get m^8/n^4
Now divide the exponents by 4 to get the final answer of:
m^2/n
Step-by-step explanation:
First, let's rewrite the equations.
1/2x + 1/3y =6
x - y = 2
The easiest system to use for substitution is the second one. Let's solve for X.
x - y = 2
add y to both sides!
x = 2 + y
Now that we know x = 2 + y we can use it to substitute in the first equation.
1/2(2 + y) +1/3y = 6
1 + 1/2y +1/3y = 6
5/6y = 5
y = 36/5
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