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nevsk [136]
3 years ago
6

Determine the best method to solve the system of equations. Then solve the system.

Mathematics
1 answer:
Naddik [55]3 years ago
6 0

Answer:

use substitution method

find equation for value of x/y

2x + 2y = 4

2y = 4 - 2x

y = <u>4 - 2x</u> ----> equation 1

2

so..substitute the

equation 1 to -5x+3y=-18

-5x+3( <u>4 - 2x</u><u> </u><u>)</u> = -18

2

-5x + 3(2-x) = -18

6-3x = -18+5x

6+18= 5x+3x

24 = 8x

<u>2</u><u>4</u> = <u>x</u>

8

x= 3. -----> eq.2

sub eq.2 into 1 to find the value of x

y = <u>4-2(3)</u>

2

y = - 1

x=3 ; y= -1

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