2: if a=1, b=2 and c=3, find the value of 5a-6b+c.
q 3: if a=1, b=2 and c=3, find the value of 11b-9c.
q 4: if a=3, b=2 and c=1, find the value of 11b-9c.
q 5: if a=2, b=3 and c=4, find the value of a+b+c.
q 6: if a=3, b=2 and c=1, find the value of 5a-6b+c.
q 7: if a=3, b=2 and c=1, find the value of a+2b+c.
q 8: if a=10, b=15 and c=5, find the value of a+2b+c. 