Question

3•(3x+1)=33 si 4•(3x-2)=40 de rezolvat plssss repede

Answer 1

Răspuns:

1).   9x+3=33

9x=33-3

9x=30

x=30/9=10/3

2). 12x-8=40

12x=40+8

12x=48

x=48:12

x=4

Explicație pas cu pas:

Answer 2

3×(3x+1)=33 notam paranteza cu a

3×a=33

a=33:3

a=11

3x+1=a

3x+1=11

3x=11-1

3x=10

x=10/3

4×(3x-2)=40

notam paranteza cu b

4×b=40

b=40:4

=10

(3x-2)=10

3×-2=10

3×=10+2

3×=12

×=12:3

×=4