solve using the method sustitution 3x+5y-7=0 , 11x-13y-9=0
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Step-by-step explanation:
hy mate here is your answer:----
3x+5y=7----(1) ]×11x
11x-13y=9---(2) ]×3x
- + -
_____________
5y+3y=1-2
8y=-1
y=-1/8
so, we put the value of y in any equation means in (1) or in(2)...
3x+5(-1/8) =7
3x-5/8=7
3x=7+5/8
3x=56+5/8
3x=61/8
3x=7.625
x=7.625/3
x=2.54166667
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