Question

alguém pode resolver pra mim?
a) 2×+5-5×=-1
b) 5+6×=5×+2
c)×+2×-1-3=×
d)-3×+10=2×+8+1

Answer 1

a) 2×+5-5×=-1
    2x - 5x = -1 - 5
         - 3x = -6 .(-1)
           3x = 6
             x = 6/3
             x = 2

b) 5+6×=5×+2
    6x - 5x = 2 - 5
            x = - 3

c)×+2×-1-3=×
    3x - x = 1 + 3
       2x = 4
       x = 4/2
        x = 2

d) -3×+10=2×+8+1
     -3x -2x = 8 + 1 -10
           -5x = 9 - 10
             -5x = -1 .(-1)
              5x = 1
                x = 1/5