bantuin nomer 4, 5, 6 dong

no.4
9=12
9+3=12+p

9=12
12=12+p

9(12+p)=12.12
108+9p=144
9p=144-108
9p=36
p=36/9
p=4

no.5
6=3
6+4=x

6=3
10=x

6.x=3.10
6x=30
x=30/5
x=5

no.6
nilai y
6=y
6+4=10

6=y
10=10

10.y=6.10
10y=60
y=60/10
y=6

nilai x
x=y
x+2=10

x=6
x+2=10

x.10=6(x+2)
10x=6x+12
10x-6x=12
4x=12
x=12/4
x=3