I have problem with there three question to get solution, I wannahelp, happy new year 🎉

Q : Selve the System of linear equations. SX-Y+42=1 2x+y-Z = 2 1-X-5+22=3 Qui solve the system of nonlinear equations. sy-109(x+3) = 1 2-y-lox Qs - Solve the system of nonlinear equations. SX-Y=2 [x² + 2x=8-7