Question

Buna va rog mult ajutati-ma Calculati nr x ,stiind ca a-b=6 si; a)X+3xA-3xB=20 ,b)

Answer 1

$x+3(a-b)=20 \\ x+3*6=20 \\ x=20-18 \\ x=2$

Answer 2

X+3a-3b=20
X+3(a-b)=20
X+3*6=20
X+18=20
X=2