Question

Resolva as Equações : A) x-3=18 B) 5*(-x+2)=100 C) 3x-3=18 D) 5*(-x/3+2)=100 E) 2*(5x/2) - (-25-15) + 5=50

Answer 1

a) x=18+3/ x=21
b)-5x+10=100/ -5x=100-10/-5x=90/ x=18
c)3x=18+3/ 3x=21/x= 7

Answer 2

Bom dia

 A) x - 3 = 18 ⇒ x = 18 + 3 = 21

 B) 5*(-x + 2)=100 ⇒ 5x = -90, x = -18

 C) 3x - 3 = 18 ⇒ x - 1 = 6 , x = 7

 D) 5*(-x/3 + 2) = 100 ⇒ .-x/3 + 2 = 20, -x/3 = 18, x = -54 

 E) 2*(5x/2) - (-25 - 15) + 5 = 50 ⇒ 

5x + 40 + 5 = 50
5x = 5
x = 1