Question

resolva as equações:. a) 7x-3= -3x+17 b) x/3 +9 = 2x + 4

Answer 1

a)7x-3=-3x+17
7x+3x=17+3
10x=20
x=20/10
x=2

b) x/3+9=2x+4
x+9.3=2.3x+4.3
x+27=6x+12
x-6x=12-27
-5x=-15
-5x=-15.(-1)
5x=15
x=15/5
x=3