Question

resolva a equacao x3+x2=7+x3

Answer 1

$x \times 3 + x \times 2 = 7 + x \times 3 \\ 2x = 7 \\ x \times \frac{7}{7} \\ x3 \frac{1}{2}.x = 3.5$

Answer 2

3x+2x=7+3x

3x-3x+2x=7

2x=7

x= 7/2

x= 3,5