Penyelesaian dari persamaan a) 3x = -21 b) 4p + 7 = 35 c) 6x – 7 = 23

A. 3x = 21
x = 21/3
x = 7
b. 4p + 7 = 35
4p = 35-7
4p = 28
p= 28/4
p= 7
c. 6x -7 = 23
6x = 23 + 7
6x = 30
x = 30/6
x = 5

ingaat! klw pindah ruas tanda berubah

A
3x=-21
x=-21/3
x=-7
B
4p+7=35
4p=35-7
P= 28/4
P=7
C
6x-7=23
6x=23+7
6x=30
X= 30/6
X=5