Question

Resolver

a) x+3+15=6 (+2)

b) 2 (x-3)=5+x-3

Answer 1

a) x + 3 + 15 = 6 (+ 2 )
x + 3 + 15 =  12
x = 12 - 15 - 3
x = - 6

b) 2 (x - 3 ) = 5 + x - 3
2x - 6 = 5 + x - 3
2x - x = - 3 + 5 + 6
x = + 8