Question

Solve the system with substitution
72 +10y = 36
y = 2x + 9

Answer 1

x= -63 y= -117

Explanation:

72+10(2x+9)=36

72+20x+90=36

162+20x=36

20x=-126

×= -63

y= 2(-63)+9

y=-126+9

y= -117