Question

ATIVIDADE
1) Resolva as equações a seguir:
a) 18x - 43 = 65
b) 2x - 16 = 14 - 17x
c) 10Y - 5 (1 + y) = 3 (2Y - 2) - 20
d) x(x + 4) + x(x + 2) = 2X + 12
e) (x - 5)/10 + (1 - 2x)/5 = (3-X)/4
f) 4.(x + 3) - x = 24 + x
g) 5x-3=2x+9
h) 2x+28=x+18
i) 7(2x-3)+2(x+1)-5(x-9)=3x+10
j) 4.(x + 3) - x = 24 + x
k) 2x+31(x-5)=4x+9
g) 50 + (3x - 4) = 2(3x - 4) + 26​

Answer 1

a) 18x– 43= 65

18x =65 + 43

18x= 108

x = 108/18

x =6„

b) 2x – 16 = 14 – 17X

2X + 17X = 14 + 16

19X = 30

X=30/19

c) 10y – 5 (1 + y ) = 3 ( 2y – 2) – 20

10y –5 – 5y = 6y – 6 – 20

5y – 5 = 6y – 26

5y - 6y = – 26 + 5

–y = –21

y = –21/ –1

y = 21„

g) 5x – 3 = 2x +9

5x - 2x = 9 +3

3x = 12

x = 12/3

x = 4„

Espero ter Ajudado um pouco