Number 22 and 23 ( the answer is wrong i need the correct one) 25 points tell me your work

Step-by-step explanation:

9(t-7)=4

9t-63=4

-9 -9

t-72=u

t=-72

the equivalent expression are always the hardest ones but you look at the gcf also

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,