помогите решить системы            3х-у=24      2х+у=2            5х-3у=11

                                                    х+у=4        8х-3у=15       18х+27у=0

Помогите, пожалуйста!!!

Put the verb into the correct form. All the sentences are past.

Example: I didn`t go(not/go) to the park yesterday because the weather wasn`t (not/be) very good.

1.I___(not/have breakfast) this morning because I___(not/have) time.

2.We___(not/buy) anything because we___(not/have) any money.

3.I___(not/sleep)because I___(not/feel)sleepy.

4.She___(not/be) interested in the book because she__(not/understand) it.