allery2x + y = 7 અને x + y = 4 પરથી, y નું મૂલ્ય કેટલું થાય?
A4
B2
C3
D1
Answer & Solution
Correct answer: D. 1
બાદબાકી કરતાં x = 3 મળે છે, અને પછી y = 4 - 3 = 1 મળે છે.
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