Rob Kardashian and Tyga fire back at Black Chyna's claims she get no child support

Rob Kardashian and Tyga (yes Kylie Jenner's ex) fired back at their mutual ex Black Chyna after the rapper made public claims that the fathers of her kids are not paying any child support to her.

"Yesterday I had to give up 3 of my cars ...my reasons... morals, beliefs, being a single mother, no support," Chyna tweeted on March 30. "I'm a MAMA."

In a second tweet, she added, "Single no support child support."

Tyga—who shares 9-year-old son  with Chyna—defended his contributions.

"I pay 40k a year for my son school & he lives w me mon- sat," the "Rack City" rapper wrote in the comments section of a screenshot of her tweets. "Why would I pay child support lol."

Rob Kardashian—who shares 5-year-old Dream Kardashian with Chyna—posed the same question, writing on the same post, "I pay 37k a year for my daughter's school. handle every single medical expense. I pay for all her extracurricular activities. I have my daughter from Tuesday-Saturday. Why would i pay child support lol."