Question

Verify the following.
a.(-36)+(-74)=(-74)+(-36).
b.(-18)-(+13)=-18-13.
c.[(-15)+(-11)]+35 =(-15)+[(-11)+35].
plz answer fastit's urgent.​

Answer 1

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Home > NCERT Solutions Class 7 Mathematics > Chapter 1 - Integers > Exercise 1.3 > Question 50

NCERT Solutions Class 7 Mathematics Solutions for Exercise 1.3 in Chapter 1 - Integers

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Q2) Verify the following:

(a) 18 × [7 + (–3)] = [18 × 7] + [18 × (–3)]

(b) (–21) × [(– 4) + (– 6)] = [(–21) × (– 4)] + [(–21) × (– 6)]

Answer:

Solution 2:

(a) 18 × [7 + (–3)] = [18 × 7] + [18 × (–3)]

18 × [4] = [18 × 7] + [–54]

18 × [4] = 126 –54

72=72

LHS=RHS

hence verified!

(b) (–21) × [(– 4) + (– 6)] = [(–21) × (– 4)] + [(–21) × (– 6)]

(–21) × (-10) = 84 +126

210 = 210

LHS = RHS

hence verified !