Question

Resolver as equações polinomiais do primeiro grau
4) 9(X – 3) + 1 = 28
5) 9X – 3(2X + 2) = 15
6) 5(X + 2) – 2(3X – 1) = 13
com calculos

Answer 1

Resposta:

4) 9(x–3)+1 = 28

9x-27+1=28

9x=28+27-1

9x=54

x=54/9

x=6

5) 9x-3(2x-2) = 15

9x-6x-6=15

3x-6=15

3x=15-6

x=9/3

x=3

6) 5(x+2)-2(3x-1)=13

5x+2-6x-2=13

13+2-2=6x-5x

x=13