The first attack in Baghdad's impoverished Al-Bayaa neighborhood on the night of July 22 killed at least 18 people and wounded 36, according to RFE/RL.
The second attack later on July 22 hit the northeastern neighborhood of Al-Shaab.
Police said it killed at least eight people and wounded 22.
The blasts came a day after at least 19 people were killed by a wave of bombing in Shi'ite neighborhoods of Baghdad and other predominantly Shi'ite areas of Iraq.
There have been no claims of responsibility for any of the attacks.
But Shi'ite areas and Iraqi government forces often are targeted by Islamic State (IS) militants and Sunni extremist supporters of the IS group.