Understanding Mathematics

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Qn Solve 2y + 3 = 1 (mod 4)

What working should used to handle these questions.

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[1/10, 9:21 PM] Muwanguzi Minka Student: The median of 2 no's is 1/2. If 1 of the no's is 7/8, what is the range of the no
[1/10, 9:30 PM] Frankiely: *Let the second number be p*
(Ist no + 2nd no)/2 = median
[(7/8) + p]/2. = 1/2
_Multiply both sides by denominator 2_
(7/8) + p = (1/2)x2
(7/8) + p = 1
_Collecting terms_
P. = 1 - (7/8)
P. = (8/8) - (7/8)
P. = 1/8

*Range* = Highest - Lowest
= (7/8) - (1/8)
= 6/8
= 3/4

What problems do you find as a Teacher while contacting a mathematics lesson