Question

Cómo se ha se esto? Ayúdame

Answer 1

a).
13x-8 = 5x+2
13x-5x = 2+8
8x = 10
x = 10÷8
x = 1,25

b).
2x+4 = 6x-10
2x-6x = -10-4
-4x = -14
x = (-14)÷(-4)
x = 3,5

c).
2x+3x+45 = 4x+7x+15
5x+45 = 11x+15
5x-11x = 15-45
-6x = -30
x = (-30)÷(-6)
x = 5

d)
x+4x+3,5 = 2x+2x
5x+3,5 = 4x
5x-4x = -3,5
x = -3,5