if 6x-5y=13, 7x+2y=23 than 11x+18y=
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Answered by
0
Answer:
65.
Step-by-step explanation:
from eq 1. by substituting value of x we get,
x=13+5y/6.
put this value in eq 2
7(13+5y/6)+2y=23
91+35y/6+2y=23
91+35y+12y=23(6)
47y=138-91
47y=47
y=1
put the value of y in x
x=13+5(1)/6
x=18/6
x=3
now put both values in eq 3
11(1)+18(3)
=11+54
=65.ans
hope it helps..
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