Step-by-step explanation:
Part 1: 4x + 7 = 3(2x - 5)4x+7=3(2x−5)
4x+7=6x-154x+7=6x−15
7=6x-15-4x7=6x−15−4x
7=2x-157=2x−15
7+15=2x7+15=2x
22=2x22=2x
22=2x / 222=2x/2
x=11x=11
Part 2: Sam is not correct because he messed up the second step. He added 2x on both sides to get 7x, instead he should have subtracted.
Answer:
75
Step-by-step explanation:
If you flip the numbers around then all you have to do is 82-7 and when you do this then you get 75 which is the answer
Answer:
4
x
3
−
29
x
2
+
10
x
−
21
Step-by-step explanation:
You can make 11 batches of brownies. Divide 8.5 (8 1/2) by .75(3/4)