vannaht2003
17.04.2020 •
Mathematics
Solve the system using linear combination. show all work. 9x+5y=35 -2x-5y=0
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Ответ:
x = -5
y = 0
Step-by-step explanation:
Combine like terms9x + 5y = -2x - 5y = -35
7x + 5y = -5y = 35
7x = -35
2. Solve for X
7x /7 = -35 /7
x = -5
3. Solve for Y
y = 0
4. Check work
9 (-5) + 5 (0) = 35 - 2 (-5) - 5 (0) = 0
-45 + 0 = 35 +10 - 0 = 0
-45 = 45 = 0
0 = 0
Ответ:
(5,-2)
Step-by-step explanation:
9x+5y=35 -2(5)-5y=0
+ -2x-5y=0 -10-5y=0
7x=35 +10 +10
/7 /7 -5y=10
x=5 /-5 /-5
y=-2
Ответ: