5*20=100, the answer would be 100 dots
Answer:
x = - 7, y = 6
Step-by-step explanation:
7x + 7y = - 7 -----> equation 1
- 10x - 7y = 28 -----> equation 2
Add equations 1 & 2,
7x + 7y = - 7
- 10x - 7y = 28
___________
- 3x + 0 = 21
- 3x = 21
x = 21 / - 3
x = - 7
Substitute x = - 7 in equation 1,
7x + 7y = - 7
7y + 7x = - 7
7y + 7 ( - 7 ) = - 7
7y - 49 = - 7
7y = - 7 + 49
7y = 42
y = 42 / 7
y = 6
So 15-7 is 8
Here are some things I did:
10-2 or 28-20
3x + 4 = 2x + 2
3x - 2x = 2 - 4
x = -2
one solution
Answer:
X = 13
Step-by-step explanation:
Hope this helped! Stay safe! Peace!✌
