Question

x = - 12 is the solution of the linear equation 5 x - 3 ( 2 x + 1 ) = 21 + x true or false​

Answer 1

Answer:

x=-12

5x-3(2x+1)=21+x

5(-12)-3{2(-12)+1}=21+(-12)

-60-3{-24+1}=21-12

-60+72-3=9

-60-3+72=9

-63+72= 9

9=9

so,

LHS=RHS

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