Question

if(2x+5,y+9)=(7,10) then (x,y)

Answer 1

2x+5=7 and
y+9=10
solve them you will get
X=1
y=1

Answer 2

2x+5=7
=>2x=7-5
=>2x=2
=>x=1
---------------
y+9=10
=>y=10-9
=>y=1