sarahmajid2554
sarahmajid2554 sarahmajid2554
  • 09-01-2021
  • Mathematics
contestada

Find the value of X and Y: 3x+9y=30 2(3x+9y)+x=64​


pls help.

Respuesta :

rebeccarayshma
rebeccarayshma rebeccarayshma
  • 09-01-2021

Answer:

x = 4 , y = 2

Step-by-step explanation:

3x+9y = 30 --------- (1)

2(3x+9y)+x = 64 ---------(2)

substitute (1) into (2)

2(30)+x = 64

60+x = 64

x = 64-60

x = 4

substitute x=4 into (1)

3x+9y = 30

3(4)+9y = 30

12+9y = 30

9y = 30-12

9y = 18

y = 18/9

y = 2

thus, x = 4 and y = 2

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