solve the problem and get your remarks of mark as brainliest
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1) put x=4 in the equation
LHS:3*4-5
RHS:7
on solving LHS, we get 7
hence, LHS=RHS
do it the similar way for the other two..
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pratyasha9187:
what does the * mean which you have put in 3
what is that
It's the multiplication symbol used in compluters
since the cross is not there, we use * to represent multiplication
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Solution:
(i) 3x – 5 = 7
Substituting x = 4 in the given equation:
L.H.S. : 3 x 4 – 5
or, 12 – 5 = 7 = R.H.S.
Hence, x = 4 is the root of the given equation.
(ii) 5x – 8 = 2x – 2
Substituting x = 2 in the given equation:
L.H.S. :
5 x 2 – 8
or, 10 – 8 = 2
R.H.S. :
2 x 2 – 2
= 4 – 2 = 2
L.H.S. = R.H.S.
Hence, x = 2 is the root of the given equation.
similarly try no (iii)
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