Question 5
How many integers $x$ make both $x+7$ and $2x+9$ 2-digit numbers?
TIMO - 2017 - Grade 9 - Preliminary Round - Paper 5 Question 5
TIMO · TIMO - 2017 - Grade 9 - Preliminary Round - Paper 5
TIMO · TIMO - 2017 - Grade 9 - Preliminary Round - Paper 5