Answer:
(- 2, 5 )
Step-by-step explanation:
Given the 2 equations
3x + 4y = 14 → (1)
x = 2y - 12 → (2)
Substitute x = 2y - 12 into (1)
3(2y - 12) + 4y = 14 ← distribute and simplify left side
6y - 36 + 4y = 14
10y - 36 = 14 ( add 36 to both sides )
10y = 50 ( divide both sides by 10 )
y = 5
Substitute y = 5 into (2) for corresponding value of x
x = 2(5) - 12 = 10 - 12 = - 2
Solution is (- 2, 5 )
3 3/5 * 5/7
Convert the mixed number into a improper fraction.
18/5 * 5/7
Multiply the numerator(18) by the other numerator(5) while multiplying the denominator(5) by the other denominator(7).
Final Answer: 90/35 or about 2.6 *Both answers are equivalent to each other.
The answer is X^2-xy+2x^2y sorry if I am wrong
There are no answer options so I will just simplify the expression:
3xy-(2x+4xy)
3xy-2x-4xy
-2x-xy
Answer:
The proportion is 2/7 = 12/42
x = 12
The answer is 12
