Question

EXERCISE 6.3
Q1. Find
(a) 35 - (20)
(b) 72 - (90)
(c) (-15) - (-18)
(d) (-20) - (13)
(e) 23-(-12
(f) (-32)-(-40)

please give me the formula​

Answer 1

Answer:

a) -15

b) -18

c) 3

d) -33

e) 35

f) 8

Answer 2

Answer:

(a) 35-20 = 15

(b) 72 - 90 = -18

(C) -15 -(-18)

= -15 +18

= 3

(D) -20 -13 = -33

(E) 23-(-12)

= 23+12

= 35

(f) -32 -(-40)

= -32 +40

= 8

Step-by-step explanation:

Formula

(1) (+) × (-) = (-)

(2) (+) × (+) = (+)

(3) (-) × (-) = (+)