Question

Resolva as equações
A) 5 ( X - 2 ) - 2 ( X - 4 ) = 10
B) 3 ( X + 2 ) + 2 ( X - 1 ) = 12​

Answer 1

Explicação passo-a-passo:

A)5 ( X - 2 ) - 2 ( X - 4 ) = 10

5X - 10 -2X +8 = 10

5X -2X -10 +8 = 10

3X -2 = 10

3X = 12

X = 12/3

X = 4

B) 3 ( X + 2 ) + 2 ( X - 1 ) = 12

3X + 6 + 2X -2 = 12

3X + 2X +6 -2 = 12

5X +4 = 12

5X = 12 -4

5X = 8

X =8/5