Question

por favor me ajudem :resolva as equaçoes 1grau a) 16x +2. (+x +8) -9 =67 b) 6.(4x +2)+7(-5x +3 )=66

Answer 1

16x +2. (x +8) -9 = 67

16x +2x + 16 - 9 = 67

16x + 2x = 67 - 16 + 9

16x + 2x = 60

18x = 60

x = 60 / 18

simplifcando;

x = 60 /18  :2

x = 30 / 9  :3

x = 15 / 3

6.(4x + 2) +7.(-5x +3 ) = 66

24x + 12 + 35x + 21 = 66

24x + 35x = 66 -  21 - 12

24x + 35x = 33

59x = 33

x = 59 / 33