Well if u think about it 2x3=6, 5x2=10,8x2=16, so pretty much what u are doing u are multiplying by 2
1 2
2 4
0.49
x 3.5
______
245
1470
+_____
1.715
note : cross out the 2 & 4 on top of .49
Answer:
7
Step-by-step explanation:
2b - 5b is -3b so it leaves the equation with -3b + 7 + 3b
-3b + 3b cancells out to 0 so it leaves the final answer to 7
Answer: I believe its 104.55
Step-by-step explanation: