Question

Resolva as expressões numéricas
a)4*(x+1)=13
b)9*(x-3)+1=18
c)5*(3-x)=4×+18
me ajudem​

Answer 1

a)

4(x + 1)= 13

4x + 4= 13

4x= 13 - 4

4x= 9

x= 9/4

b)

9(x - 3) + 1= 18

9x - 27 + 1= 18

9x= 18 + 27 - 1

9x= 44

x= 44/9

c)

5(3 - x)= 4x + 18

15 - 5x= 4x + 18

- 5x - 4x= 18 - 15

- 9x= 3 >>.(-1)

9x= - 3

x= - 3/9

x= - 1/3