Question

Equações 2x + 3 (4x²+ x - 1) = 12x²

Answer 1

2x+3(4x²+x-1)=12x²

2x+12x²+3x-3=12x²

2x+3x+12x²-12x²=3

5x=3

x=3/5

S={3/5}

Answer 2

2x+12x^2+3x-3-12x^2
5x-3=0
X=5/3