निम्नलिखित में प्रत्येक का योग ज्ञात कीजिए :
(a)(-7) + (+ 8)
(b)(-9)+ (+13)
(c) (+7) + (-10)
(d) (+12) + (-7)
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Answer:
a= 1
b= 4
c= -3
d= -5
hope it is help full
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