3 years ago

Solve each system of equations by substitution

Mathematics

2 answers:

irina1246 [14]3 years ago

8 0

Answer:

$x=7\\y=3$

german3 years ago

5 0

X + 4y = 19
x = 19 - 4y

*substitute it for the second equation*
x - 2y = 1
19 - 4y - 2y = 1
19 - 6y = 1
-6y = -18
y = 3

x + 4y = 19
x + 12 = 19
x = 7

x.y = 3.7 = 21

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