Question

ajuta.ti.ma va roggg!!!! 1. REZOLVATI INECUATIILE: a) -20=4-4t b) 2 (x-1) = 4 c) (-5)x- (-8)=8

Answer 1

a)

-20=4-4t

4t-20=-4t+4t+4

4t-20=4

4t=4+20=24

4t:4=24:4

t=24:4=6

b)

2(x-1)=4

2(x-1):2=4:2

x-1=4:2=2

x-1+1=2+1

x=2+1=3

c)

(-5)x-(-8)=8

(-5)x+8=8

(-5)x=0

-5x=0

-5x:(-5)=0:(-5)

x=0:(-5)=0