Answer:
21x-15
Step-by-step explanation:
Use the distributive property:
3×7x=21x
3×5=15
Don't forget the - sign!!!
So,
3(7x - 5) = 21x - 15
Answer:
x = -3
Step-by-step explanation:
5(x-2)+3x-4 = -38
=> 5x-10+3x-4 = -38
=> 5x+3x-10-4 = -38
=> 8x-14 = -38
=> 8x = -38+14
=> 8x = -24
=> x = -24/8
=> x = -3
Answer:
Centroid
Step-by-step explanation:
Answer:
(x)= (x+1) (x+2) (x+3)
Step-by-step explanation:
Call the first number x and the second number y. According to the first sentence, x = 6y. According to the second sentence, x + y = 77. You can combine these two equations to solve for x and y:
6y + y = 77
7y = 77
y = 11
Since x = 6y, x = 6(11) = 66