Answer:
a = 72
Step-by-step explanation:
Subtract 56 from both sides of the equation so you can isolate the variable
128-56=72
I put this into photo math and this is what it gave me -25+14i
8 students can be in a row.
If the same amount of students must be in each row across the grades, determine their greatest common factor. That would be 8 (8*2=16, 8*3=24). Any more than that, and the rows are uneven. There can be a max of 8 people in a row (2 rows for 6th grade, and 3 rows for 7th)
Hope it helps! I can explain further if needed
