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estefanlionel8678
13.02.2020 •
Mathematics
What is
-3x+3y=6
3x+5y=-46
Solved
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Ответ:
x = -7 , y = -5
Step-by-step explanation:
Solve the following system:
{3 y - 3 x = 6 | (equation 1)
3 x + 5 y = -46 | (equation 2)
Add equation 1 to equation 2:
{-(3 x) + 3 y = 6 | (equation 1)
0 x+8 y = -40 | (equation 2)
Divide equation 1 by 3:
{-x + y = 2 | (equation 1)
0 x+8 y = -40 | (equation 2)
Divide equation 2 by 8:
{-x + y = 2 | (equation 1)
0 x+y = -5 | (equation 2)
Subtract equation 2 from equation 1:
{-x+0 y = 7 | (equation 1)
0 x+y = -5 | (equation 2)
Multiply equation 1 by -1:
{x+0 y = -7 | (equation 1)
0 x+y = -5 | (equation 2)
Collect results:
{x = -7 , y = -5
Ответ:
Exact Form: 41/12
Mixed Number Form: 3 5/12
Decimal Form: 3.416 **repeating**
Step-by-step explanation: //Give thanks(and or Brainliest) if helpful (≧▽≦)//