rakanmadi87
05.02.2022 •
Mathematics
Solve the system of equations algebraically.
2x+y=5
3x−3y=3
(x,y)= (
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Ответ:
substitution
2x+y=5
y = -2x+5 (1)
3x-3y=3 (2)
1 ⇒ 2
3x - 3(-2x+5) = 3
3x+6x-15=3
9x=18
x=2
y = -2(2)+5
y = 1
Ответ:
A2 = A1*39/27
A2 = 711×39/27
A2 = 1027 m^2