Question

resolvas as equações
c) 7x-2-5x=18
d) 12x-10x-4=3
e)-x-2x-4=11
f)8x=5x+4,5

Answer 1

c)7x-2-5x=18
7x-5x=18+2
2x=20
x=10
d)12x-10x=3+4
2x=7
x=7/2
e)-x-2x=11+4
-3x=15
x=15/-3
x=-5
f)8x=5x+4,5
8x-5x=4,5
3x=4,5
x=4,5/3
(espero ter ajudado ✌