tolong jawab matematika PLSV diatas..! kelas 7

Semoga membantu dah...

Nomer 1 :
x + 16 = 7 
x =7 - 16
x= -9

Nmer 2 :
y - 27 = -18
y = -18 + 27
y = 9

Nomer 3 :
7y + 12 = 6y
7y - 6y = 12
y = 12

Nomer 4 :
3 (2x + 7) = 5 (x -4)
2x - x = 5 -4 -3-7
x = -9

Nomer 5 :
4 (x - 3 ) = 114 + 7
x = 114 + 7 -4 +3
x = 120

Nomer 6 :
4 (x - 3 ) - 2 (x - 3) =8
x + x = 8 - 4 + 2 +3
2x = 9
x = 9/2
x = 4,5

Nomer 7 :
5 (2p + 3) -3 (4p - 3) = 3 (3p - 5)
2p + 4p - 3p = 5 + 3 -3 -3 -3 + 5
3p = 4
p = 4/3
p = 1 1/3