SophieCasey
01.09.2019 •
Mathematics
Solve by substitution method 5x+y=18 and y=4x
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Ответ:
Given y = 4x; substituting y into the first equation:
5x + (4x) = 18
Combine x terms:
9x = 18
Divide by 9 on both sides:
x = 2 .
Ответ:
(1,1)
Step-by-step explanation:
hoped this helped