Question

Cine ma poate ajuta ?Dau coronita ...

Answer 1

Răspuns:

c. 3x-x=9+1 => 2x=10 => x=5

f. 4x-x=6+12 => 3x=18=> x=6

i. -x-x=21-7 => -2x=14 => x=-7

l. 9x+x=-89-1 => 10x=-90 => x=-9

c. x+1=-6:(-3) => x+1=2 => x=1

f. 2x-3=-39:3 => 2x-3=13=> 2x=16 => x=8

i. -6x-42+3x=-42 => -6x+3x=0 => x=0