Question

I need help with question four and the instructions for the equations or just solve the systems of simultaneously equation using the addition method for the two middle numbers 3 Y and -5 Y we must find the number to multiply the first equation by make the second equation equal to it.

Please help 50 points

Answer 1

x = 1\2 and y = 0

Explanation:

8x + 3y = 4 * 5\3

14x - 5y = 7 * 1

40\3x + 5y = 20\3 -------- 1

14x - 5y = 7 ----------------- 2

add equation 1 and 2

82\3x = 41\3

x = 41 3

3 * 82

x = 1\2

subtitute 1\2 for x in equation 2

14\2 - 5y = 7

7 - 5y = 7

5y = 7 - 7

y = 0\5

y = 0

thus x = 1\2 and y = 0