Answer:
n/2[2a+(n-1)d]
12/2[2(-5)+(12-1)6]
66-10=56×6=336
336 is the 12th term
12
i think
Step-by-step explanation:
23
Steps ig
((8x2) +2x(-3)))-(((-(-4)) x 2) +( 3 x( -7)) =23
