Question

Equações polinomiais do 1o grau sendo= U=Q
A) 2x+5= 17
B) 5x-12=2x+9
C) 4x=40
D) 3(2×-10)=18

Answer 1

 
 
 
A) 2x+5= 17==> 2x = 17-5 ==> 2x = 12 ==> x = 6

B) 5x-12=2x+9 ==> 5x-2x=9+12==> 3x=21==> x= 7

C) 4x=40 ==> x = 10

D) 3(2×-10)=18 ==> 6x - 30=18==> 6x= 30+18 ==> 3x=48==> x = 8