mrangel93
mrangel93
16-05-2017
Mathematics
contestada
solve by substitution method 5x+y=18 and y=4x
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snorlaxventures
snorlaxventures
16-05-2017
5x + y = 18
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 .
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