Question

cinee poate să mă ajută am nevoiee urgentt dauu coroană​

Answer 1

Răspuns:

ex 18:

a)15x-10+3x-48x+78=144-32x-78

  15x+68+3x-48x=+66-32x

  +68-66=-32x-15x-3x+48x

  2=-47x+48x-3x

  2+1x-3x

  2=-2x\

   x=2:(-2)

   x=-1

b)

6x+8-10x+15-2=14x-28+16-10x+3x

6x+21-10x=14x-12-10x+3x

21+12=14x-10x+3x-6x+10x

33=4x-3x+10x

33=11x

x=33:11

x=3

c)6x-8+30x-35-3x=9x+90+11x+132+8

6x-43+30x-3x=9x+230+11x

-43-230=9x+11x-6x-30x

-270=20x-36x

-270=-16x

x=-270:(-16)

x=+15

d)

18x-15-8x-6+13=8x-18+2x-15x+10

18x-8-8x=8x-8+2x-15x

-8+8=8x+2x-15x-18x+8x

0=10x-33x+8x

0=-23x+8x

-23x+8x=0

-15x=0

x=0:(-15)

x=0

Explicație jkchgyvjxhfdvbdfjhvdf