9(2k+3)+2=11 (k-y)
k=-11/7 y+ -29/7
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Answer:
(-4,4)
Step-by-step explanation:
-5x-10y=-20
10x+10y=0
divide both sides by 2
-5x-10y=-20
5x+5y=0
that makes
-5y=-20
divide both sides by -5
y=4
now substitute 4 for y
10x+10 x 4=0
multiply
10x+40=0
subtract
10x=-40
divide
x=-4
3 - x = 10
-x = 10 - 3
-x = 7
x = -7 <===
