Question

a)2×+3(-×+1)=5
b)2×+3=×
c)b+3=b me ajudem por favor

Answer 1

a) 2x +3× (-x +1) = 5
2x -3x +3 = 5
2x -3× = -3 +5
-1× = +2

b) 2× +3 = ×
2× -× = -3
× = -3

c) b+3 = b
b -b = -3
b = 3

(nao tenho certeza)