5a+2b=−18
3a+b=−11
Pa help po thank you
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Step-by-step explanation:
5a+2b=−18
[3a+b=−11]-2
5a+2b= -18
-6a-2b=22
__________
-a =4
a= -4
5a+2b= -18 substitute a=-4
5(-4)+2b=-18
-20+2b=-18
2b=-18+20
2b=2
b=1
solution:
(a,b)= (-4,1)
pa BRAINLIEST naman po ang sagot ko