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
Answer:
96
Step-by-step explanation:
8z when 12=z
substitute the z for 112 when doing that multiply 8(12)=96
Answer:
3
Step-by-step explanation:
25 x 3=75
Answer:
6^3
Step-by-step explanation:
6^3 is the same as 6*6*6
8/21,13/21 because .16/42=x/100 and then cross multiply and simplify
