Question

5(x-2)=45
3(x+1)-5=x+6
4x+3(x+1)=2(x-1)+15

Answer 1

Răspuns pas cu pas:

1.

5(x-2) = 45

5x-10 = 45

5x = 45+10

5x = 55

x = 55÷5

x = 11

2.

3(x+1)-5 = x+6

3x+3-5 = x+6

3x-2 = x+6

3x-x = 6+2

2x = 8

x = 8÷2

x = 4

3.

4x+3(x+1) = 2(x-1)+15

4x+3x+3 = 2x-2+15

7x+3 = 2x+13

7x-2x = 13-3

5x = 10

x = 10÷5

x = 2