can you guys please help me with number 14 and with shown work

Answer:
f= 5
g=-3
Step-by-step explanation:
11 (11f +14g =13)
11 (11f + 10g =25)
121f + 154g = 143
121f + 110g = 275
Then cancel all the f's so that you get the value of g
+154g - +110g = 44g
143 -275= -132
44g = -132 :Then divide both sides by 44 to get value of g