Question

2. Calcule as equações: (Utilize a operação inversa)

a) – 5 + x = – 15

b) 2 . x = – 14

c) 2. x + 3 = – 13

d) 2,5 + x – 5,3 = 4,2

e) 2/3 x + 1/2 x = 14

f) 5x = 4

g) 4x = – 4

Me ajudem por favor

Answer 1

a) x=-15+5<=>x=-10
b) x=-14/2<=>x=-7
c) 2.x=-13-3<=>x=-16/2
d) x=4,2-2.5+5,3<=>x=7
e) 4/6x+3/6x=14<=>7/6x=14<=>7x=14x6<=> 7x=84<=>x=84:7<=>x=12
f) x=4/5
g) x=-4/4<=>x=-1