Mathematics
The value of (-7) x 6 + (-7) x 14 is
- 42
- -84
- -140
- -196
Integers
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Answer
Given expression:
(-7) x 6 + (-7) x 14
= -7 x (6 + 14) [a x (b + c) = (a x b) + (a x c) ⇒ Distributive property]
=-7 x 20 [Simplifying ( )]
= -140
∴ The value of (-7) x 6 + (-7) x 14 is -140
Hence, option 3 is the correct option.
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Fill in the blanks :
(i) The absolute value of any integer can never be …………… .
(ii) The sum of any integer and its additive inverse is always …………… .
(iii) a x (b + c) = (a x b) + (a x c) is …………… property of multiplication over addition.
(iv) The product of two integers having unlike signs is always a …………… integer.
(v) The additive inverse of an integer a has the …………… sign as a.
State True or False :
For any integer a, the multiplicative inverse is 1.