Looking for answers? Westonci.ca is your go-to Q&A platform, offering quick, trustworthy responses from a community of experts. Explore thousands of questions and answers from a knowledgeable community of experts ready to help you find solutions. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.
Sagot :
[tex]5x-y=10 \\
4x-2y=20 \ \ \ |\hbox{divide both sides by (-2)} \\ \\
5x-y=10 \\
\underline{-2x+y=-10} \ \ \ |\hbox{add by sides} \\
5x-2x-y+y=10-10 \\
3x=0 \\
x=0 \\ \\
\hbox{substitute 0 for x in one of the equations:} \\
5 \times 0 -y=10 \\
-y=10 \\
y=-10 \\ \\
\hbox{the answer:} \\
x=0 \\ y=-10[/tex]
[tex]3x+4y=12 \\ 2x-y=-10 \ \ \ |\hbox{multiply both sides by 4} \\ \\ 3x+4y=12 \\ \underline{8x-4y=-40} \ \ \ |\hbox{add by sides} \\ 3x+8x+4y-4y=12-40 \\ 11x=-28 \\ x=-\frac{28}{11} \\ x=-2 \frac{6}{11} \\ \\ \hbox{substitute -28/11 for x in one of the equations:} \\ 2 \times (-\frac{28}{11})-y=-10 \\ -\frac{56}{11}-y=-\frac{110}{11} \\ -y=-\frac{110}{11}+\frac{56}{11} \\ -y=-\frac{54}{11} \\ y=\frac{54}{11} \\ y=4 \frac{10}{11} \\ \\ \hbox{the answer:} \\ x=-2\frac{6}{11} \\ y=4 \frac{10}{11}[/tex]
[tex]3x+4y=12 \\ 2x-y=-10 \ \ \ |\hbox{multiply both sides by 4} \\ \\ 3x+4y=12 \\ \underline{8x-4y=-40} \ \ \ |\hbox{add by sides} \\ 3x+8x+4y-4y=12-40 \\ 11x=-28 \\ x=-\frac{28}{11} \\ x=-2 \frac{6}{11} \\ \\ \hbox{substitute -28/11 for x in one of the equations:} \\ 2 \times (-\frac{28}{11})-y=-10 \\ -\frac{56}{11}-y=-\frac{110}{11} \\ -y=-\frac{110}{11}+\frac{56}{11} \\ -y=-\frac{54}{11} \\ y=\frac{54}{11} \\ y=4 \frac{10}{11} \\ \\ \hbox{the answer:} \\ x=-2\frac{6}{11} \\ y=4 \frac{10}{11}[/tex]
We appreciate your time. Please revisit us for more reliable answers to any questions you may have. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Thank you for visiting Westonci.ca, your go-to source for reliable answers. Come back soon for more expert insights.