SOLUTION: 6x+5y=30 x=y+5 how do we solve and prove?
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Question 1005807
:
6x+5y=30
x=y+5
how do we solve and prove?
Answer by
fractalier(6550)
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From
6x + 5y = 30 and
x = y + 5
we should substitute the second equation into the first and get
6(y + 5) + 5y = 30
6y + 30 + 5y = 30
11y + 30 = 30
11y = 0 and
y = 0
x is the 5.