Question

ME AJUDEM PFVRRRR!!!

Answer 1

Resposta:

Explicação passo-a-passo:

a) 3x=27 ==> x= 27/3 = 9

b) -7x=63 ==> x=63/(-7)= -6

c)X-4 = 20 ==> X= 20 + 4 = 24

d)X - 12= -6==> X= -6 + 12= 6

e) 3x + 42= 3 ==> 3x= 3-42 ==> 3X = -39 ==> X = -39/3 = -13

f) 5X - 25 = 5 ==> 5X = 5 + 25 ==> 5X=30 ==> X = 6

g) 2X - 12 = X + 7 ==> 2X - X= 7 + 12 ==> X = 19

h)-5X - 25= -2x+2 ==> -5X + 2X = 2 + 25==> -3X= 27 ==> X= 27/(-3)= -9

i) 2/X = 5/12 ==> 24 = 5X ==> X = 24/5

j) 2X/7 = 56/8 ==> 2X/7 = 7 ==> 2X = 49 ==> X = 49/2