1.

8.+1 x-12x-12x +1)+(x+3) = 5x + 4(x-1)+b(x-1)=c(x-1)-d(x,

Answer»

(2x+1)+(x+3)= 5x+4=> (2x+x)+(1+3) = 5x+4=> 3x+4 = 5x+4=> 5x-3x = 0=> 2x=0=> x= 0



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