Maryam (Mimi) has a thousand questions for her dad who left her and her mother when she was younger, but her mom seems to have moved on and won't talk to her about him. Her mother Samia is an artist and money is often tight for both of them in the city. One summer, Mimi's mom decides they will take a trip to Pakisan (!) where Mimi's grandparents live. Imagine how thrilled she is to learn that her dad (globe-trotting journalist) is also currently in Karachi.
I've had Solving for M on my TBR for a long time now! Mika and her mom are used to things just being the both of them because her parents divorced when she was a baby. Her dad remarried soon after, and her mom hasn't yet. She's a new middle schooler and is enjoying her math class, although the new pod system in their school means she isn't in the same group as her best friend. Their math teacher is very engaging and asks the kids to keep a semi-private math journal for the math problems they will do during the school year. All is well until Mika's mom discovers a spot on the back of her leg, which turns out to be a melanoma.