Question

(3x²+x-7)=3x²-3x-1
помогите срочно :(​

Answer 1

$(3x^{2} +x-7)=3x^{2} -3x-1\\x-7=-3x-1\\x+3x=-1+7\\4x=6\\x=\frac{3}{2} = 1\frac{1}{2}= 1,5$