learning test number 1 evaluate expression fill in the blank with the correct number to complete the solution

1.3b+4 b=13
3(___)+4 =____+4
=____

2.6d-4+2d d=5
6d-4+2d= 6(____)-4+2(___)
=____-4+10
=____+10
=36

3.n²+2n n=3
n²+2n =3²+2(___)
=___+6
=15

yan na ang whole hah, Wag nyu ko pag lolokohin... ​