What is the answer to this maths watch question? Look at screenshot attached. Thank you.
2 answers:
Answer+Step-by-step explanation:
14 - 9 = 5 then (14 - 5 = 9 and 14 + 5 = 19)
…………………………………………………………………
1+18=19
2+17=19
3+16=19
4+15=19
5+14=19
6+13=19
7+12=19 ⇒ 7 - 12 = -5
8+11=19
9+10=19
14-x=9
14=x+9
x=14-9
x=5
14+5=19
x+y=19
x-y=(-5)
Adding both equations,
We get,
x+y=19
x-y=(-5)
2x=14
x=7
x+y=19
7+y=19
y=12
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