![\begin{cases}2x-9y=-51\\2x-3y=-9\end{cases}\\\\\\\begin{cases}(2x-9y)(-1)=-51(-1)\\2x-3y=-9\end{cases}](https://tex.z-dn.net/?f=%5Cbegin%7Bcases%7D2x-9y%3D-51%5C%5C2x-3y%3D-9%5Cend%7Bcases%7D%5C%5C%5C%5C%5C%5C%5Cbegin%7Bcases%7D%282x-9y%29%28-1%29%3D-51%28-1%29%5C%5C2x-3y%3D-9%5Cend%7Bcases%7D)
(adding the second equation to the first one)
![\begin{cases}\qquad6y=42\\2x-3y=-9\end{cases}\\\\\\\begin{cases}\qquad y=7\\2x-3y=-9\end{cases}\\\\\\\begin{cases}y=7\\2x-3(7)=-9\end{cases}\\\\\\\begin{cases}y=7\\2x-21=-9\end{cases}\\\\\\\begin{cases}y=7\\2x=12\end{cases}\\\\\\\begin{cases}x=6\\y=7\end{cases}](https://tex.z-dn.net/?f=%5Cbegin%7Bcases%7D%5Cqquad6y%3D42%5C%5C2x-3y%3D-9%5Cend%7Bcases%7D%5C%5C%5C%5C%5C%5C%5Cbegin%7Bcases%7D%5Cqquad%20y%3D7%5C%5C2x-3y%3D-9%5Cend%7Bcases%7D%5C%5C%5C%5C%5C%5C%5Cbegin%7Bcases%7Dy%3D7%5C%5C2x-3%287%29%3D-9%5Cend%7Bcases%7D%5C%5C%5C%5C%5C%5C%5Cbegin%7Bcases%7Dy%3D7%5C%5C2x-21%3D-9%5Cend%7Bcases%7D%5C%5C%5C%5C%5C%5C%5Cbegin%7Bcases%7Dy%3D7%5C%5C2x%3D12%5Cend%7Bcases%7D%5C%5C%5C%5C%5C%5C%5Cbegin%7Bcases%7Dx%3D6%5C%5Cy%3D7%5Cend%7Bcases%7D)
Answer:
taking away is subtracting so if you take away 10 from 67 the equation would be 67-10
the answer would be 57
I’m not 100% sure but i think it’s Linear.
Answer:
16/52
Step-by-step explanation:
A 4 or a club4/52 + 13/52 - 1/52 = 16/52 = 4/13f. A 6 or a spade4/52 + 13/52 - 1/52 = 16/52 = 4/13g. A heart or a club13/52 + 13/52 = 26/52 = 1/2h.
12= 1/3*x 12= x/3 36=x Hoje ela tem 4 anos, daqui a 8 anos terá 12 anos, que é um terço da idade de seu pai, 12*3=36