Question

Rezolvati,in multimea nr intregi,ecuatiile:
a)-3•x+11=-1
b)21=7•x-21
c)10•x+99=88
d)2•x+x=-20+(-10)
e)-(1-2x)=-37​

Answer 1

Mult succes în continuare !

Answer 2

a) -3x + 11 = -1 => -3x = -12 => x = -12/-3 = 4

b) 21=7x - 21 <=> -7x = -42 => x = -42/-7 = 6

c) 10x +99 = 88 => 10x = - 11 => x = -11/10 = -1,1

d) 2x + x = -20 - 10 => 3x = -30 => x = -30/3 = -10

e) -(1-2x) = -37 <=> -1 + 2x = -37 => 2x = -36 => x = -36/2 = -18