A)18x + 5x – 1 = 52x – 3023x – 1 = 52x – 30 - 30 y 23x pasan a los otros miembros con signo cambiado : 30 – 1 = 52x – 23x o lo que es lo mismo : 52x – 23x = 30 – 129x = 29x = 29 / 29x = 1
b)6(x - 1) – 3(5 - x) = 4 (6 + x)6x - 6 - 15 + 3x = 24 + 4x - 6, - 15 y 4x pasan a los otros miembros con signo cambiado : 6x + 3x – 4x = 24 + 6 + 159x – 4x = 455x = 45x = 9
c)10(x - 2) + 6x = 2(3x - 5)10x – 20 + 6x = 6x – 10 (se elimina 6x)10x – 20 = - 1010x = 20 – 1010x = 10x = 10 / 10x = 1
d)8y + 5y – 73 = 10y + 112 + 40y13 y – 73 = 50y + 112 - 73 – 112 = 50y – 13y37y = - 185y = - 185 / 37y = - 5
e)5x – 3 + 2 x – 32 = 2 – 8x – 957x – 35 = - 8x – 937x + 8x = 35 – 9315x = - 58x = - 58 / 15
f)6 (x – 2) – 2(4x – 3) = 24 – 8x6x – 12 – 8x + 6 = 24 – 8x (se elimina 8x)6x – 12 + 6 = 246x - 6 = 246x = 24 + 66x = 30x = 30 / 6x = 5
g)5(2x) – 2(2x – 5) = 14x – 15010x – 4x + 10 = 14x – 1506x + 10 = 14x – 150150 + 10 = 14x - 6x o lo que es lo mismo : 14x – 6x = 150 + 108x = 160x = 160 / 8x = 20.