The root of 3x 5 7 is x 4

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Solve substitution the root of 3x-5= 7 is x=4

Answered by admin @


3x-5=7 ........................(i)
putting x=4 in LHS of (i) we get
LHS=3*4-5
=12-5
=7
LHS= RHS
4 is the root of the equation.

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