Question

Gente me ajuda Por favor e pra intregar amanhã

Answer 1

a)
     $2x-6 = x+15 \\\\ 2x - x = 15 + 6 \\\\ x = 21$

b)
     $3x-20 = 2x+10 \\\\ 3x - 2x = 10 + 20 \\\\ x = 30$

c)
     $4x + 5x = 180 \\\\ 9x = 180 \\\\ x = \frac{180}{9} \\\\ x = 20$

d)
     $5x - 30 + 2x = 180 \\\\ 7x = 180 + 30\\\\ x = \frac{210}{7} \\\\ x = 30$