MoneyMike42
06.04.2020 •
Mathematics
Solve a system equation
y=–2x–5
y=2x+3
Solved
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Ответ:
(-2,-1)
Step-by-step explanation:
y=–2x–5
y=2x+3
Since both equations are equal to y, we can set them equal to each other
–2x–5=2x+3
Add 2x to each side
–2x+2x–5=2x+2x+3
-5 = 4x+3
Subtract 3 from each side
-5-3 = 4x+3-3
-8 = 4x
Divide by 4
-8/4 = 4x/4
-2 =x
Now we can find y
y = 2x+3
y =2(-2)+3
y =-1
Ответ: