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VMariaS [17]
4 years ago
8

What is the steps to this problem y=6x-11 -2x-3y=-7

Mathematics
2 answers:
Amanda [17]4 years ago
6 0
Just subsitute 6x-11 for y in the second equation
-2x-3(6x-11)=-7
-2x-18x+33=-7
-20x+33=7
subtract 33 from both sides
-20x=-40
multiply -1
20x=40
dividede by 20
x=2

then subsitute
y=6x-11
y=6(2)-11
y=12-11
y=1

x=2
y=1
yaroslaw [1]4 years ago
5 0
\left \{ {{y=6x-11} \atop {-2x-3y=-7}} \right. \ \ \ | substitute\ first\ equation\ into  \ the\ second\\\\
-2x-3(6x-11)=-7\\\\
-2x-18x+33=-7\\\\
-20x+33=-7\ \ \ | subtract\ 33\\\\
-20x=-40\ \ \ | divide\ by\ -20\\\\
x=2\\\\
y=6x-11=6*2-11=12-11=1
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