To solve these equations:
1) K x 9 = 130 + 140K x 9 = 270K = 270 / 9K = 30
2) b ÷ 6 = 200 - 120b / 6 = 80b = 80 x 6b = 480
3) 164 - c = 720 ÷ 9164 - c = 80-c = 80 - 164-c = -84c = 84
To solve these equations:
1) K x 9 = 130 + 140
K x 9 = 270
K = 270 / 9
K = 30
2) b ÷ 6 = 200 - 120
b / 6 = 80
b = 80 x 6
b = 480
3) 164 - c = 720 ÷ 9
164 - c = 80
-c = 80 - 164
-c = -84
c = 84