Answer:
94
Step-by-step explanation:
7*78 + x = 8*80
x = 94
Or, think that he was short 2 points on each of 7 tests, so he has to make them all (14) up on the last test.
x 12x - 6 3x + 3 6(2x - 1)
1 6 6 6
2 18 9 18
3 30 12 30
24,12
suppose,
x+y=36
x=2y
2y+y=36
y=12
x=24
i dont see it
