Mathematics: X-5y=18, 2x-3y=-13? what is x and y, using the substitution method

X-5y=18, 2x-3y=-13? what is x and y, using the substitution

Ответ:

live4dramaoy0yf9

04.01.2022

X - 5y = 18
x = 18 + 5y

2x - 3y = -13
2 ( 18 + 5y ) - 3y = -13
36 +10y - 3y = -13
36 + 7y = -13
7y = -49
y = -7

x = 18 + 5y = 18 + 5(-7) = 18 - 35 = -17

So, x = -17 and y = -7

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Ответ:

cicimarie2018

27.01.2023

Mathematics

5-3(1/2x+2)=-7
-3(1/2x+2)=-7-5
(1/2x+2)=4
1/2x=2
x=4
just to give u an idea

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