Answer:
280
Step-by-step explanation:
2/3 * 42 = 28
28 * 10 = 280
Answer:
-21x
I think I did the math and this is what I got.
x=4
Step-by-step explanation:
2x+4=12
-4 -4
---------------
2x = 8
---- ---
2 2
x=4
Ab + bc = ac
3x + 4 + x + 3 = 5x + 2
4x + 7 = 5x + 2
7 - 2 = 5x - 4x
5 = x <==
ab = 3x + 3....3(5) + 4 ....15 + 4 = 19
bc = x + 3 ...5 + 3 = 8
ac = 5x + 2....5(5) + 2.....25 + 2 = 27
