Question

Resolva as equações a)25x-39=139 b) 4x-18=22-3 c)5x-6 (3+2x)=4 (5x-8)-30 d) 7 (2x-3)+(10x-13)=(15-x) e)3(x-4)+18=36

Answer 1

a) 25x= 139+39
25x=178
x=178
25
x = 7,12

b) 4x=22-3+18
4x=19+18
4x= 37
x= 37
4
x= 9,25

c) 5x+2x= -4+6
7x = 10
x= 10
7
x= 1,42

d) 2x+10x+x=15+3+13
13x= 18+13
13x= 31
x= 31
13
x= 2,38

e) x=36-3+4-18
x= 15+4
x= 19

ESPERO TER AJUDADO