Question

Exercițiul 4 punctele c și d vă rog!

Answer 1

c)

Ecuatia devineL

10x-35-9x+24=9x-16-6x+10+13

x-11=3x+7

x-3x=7+11

-2x=18

x=-9

d)

Ecuatia devine:

2(15-12x+32)-7=3(18-10x+15)+18

2(47-12x)-7=3(33-10x)+18

94-24x-7=99-30x+18

87-24x=117-30x

-24x+30x=117-87

6x=30

x=5

Answer 2

c)

5(2x-7)-3(3x-8)=9x-16-2(3x-5)+13=

5(2x-7)-3(3x-8)=9x-3-2(3x-5)=

10x-35-9x+24=9x-3-6x+10=

x-11=9x-3-6x+10=

x-11=3x+7

-11=3x+7-x=2x+7

-11-7=2x

-18=2x

$- \frac{18}{2} = x$
-9=x

x=-9