Question

Resolva as seguintes equações:

a)y+4•(y-1)=9-2•(y+3)



b)x-(x-1)=12-(3x-2)​

Answer 1

Resposta:

a) y+4(y-1) = 9-2(y+3)

y+4y-4 = 9-2y-6

y+4y+2y = 9-6+4

7y = 7

y = 7/7

y = 1

b) x-(x-1) = 12-(3x-2)

x-x+1 = 12-3x+2

x-x+3x = 12+2-1

3x = 13

x = 13/3