Answered

IDNStudy.com, ang iyong mapagkukunan ng mabilis at eksaktong mga sagot. Sumali sa aming platform upang makatanggap ng mabilis at eksaktong tugon mula sa mga propesyonal sa iba't ibang larangan.

Using substitution method, what's the answer of these? x - y = 6  and  2x + 3y = -3  (steps by steps po) Sorry po  I hate math talaga :3 and I'm not listening to our teacher while she is discussing our lesson lol. XD 

Sagot :

x - y = 6  ----equation 1
2x + 3y = -3  -----equation 2
from equation 1 you'll have:
x - y = 6
x = 6 + y ------equation 3
substitute equation 3 to equation 2
2x + 3y = -3
2(6+y) + 3y = -3
12 + 2y + 3y = -3
2y + 3y = -3 - 12
5y = -15
y = -3
substitute to equation 3
x = 6 + y
x = 6 + (-3)
x = 3

PS: Change your mind-set about Math. 
      Don't hate it. 
      Take time to understand and surely you'll appreciate it.
      It's an enjoyable subject. =)