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Lina20 [59]
3 years ago
7

How I do this? 3x+4y=11 X-2y=-3

Mathematics
1 answer:
Amanda [17]3 years ago
5 0

Answer:

\huge\boxed{x=1,\ y=2\to(1,\ 2)}

Step-by-step explanation:

\left\{\begin{array}{ccc}3x+4y=11\\x-2y=-3&\text{multiply both sides by (-3)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}3x+4y=11\\-3x+6y=9\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\ \ \ \ 10y=20\qquad\text{divide both sides by 10}\\.\qquad\qquad\boxed{y=2}\\\\\text{subtitute it to the second equation:}\\x-2(2)=-3\\x-4=-3\qquad\text{add 4 to both sides}\\\boxed{x=1}

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Step-by-step explanation:

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Hope this helps!

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Problem Apply the distributive property to create an equivalent expression. (m-3+4n)\cdot (-8) =(m−3+4n)⋅(−8)=
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Given:

The expression is:

(m-3+4n)\cdot (-8)

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Solution:

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(m-3+4n)\cdot (-8)

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