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Mathematics
Yahir Roach
12 October, 12:57
Solve using substitution
7x-9y=-9
X=-9
+5
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1
)
Khloe Rollins
12 October, 13:11
0
y=6
x=6.42
Step-by-step explanation:
7 (-9) + 9y=-9
-63+9y=-9
+63 + 63
9y/9=54/9
y=6
7x-9 (6) = -9
7x-54=-9
+54 + 54
7x/7=45/7
x=6.42
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