Question

aiuda ........... ..​

Answer 1

Respuesta:

a) $10-x\geq 3x+30\\-x\geq 3x+30-10\\-x\geq 3x+20\\-x-3x\geq 20\\-4x\geq 20\\x\leq -5$

c)

$2x-4\leq 4x+2\\-4\leq 4x+2-2x\\-4\leq 2x+2\\-4-2\leq 2x\\-6\leq 2x\\x\geq -3$

d) 4-2x<5-4x

-2x<5-4x-4

-2x<-4x+1

-2x+4x<1

2x<1

x<1/2