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Carina Freeman
Mathematics
12 July, 15:39
X+y=-13 and 4x+6y=-72
+4
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2
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Bentley Rowland
12 July, 15:41
0
x=-3
y=-10
Step-by-step explanation:
X+y=-13 Equation 1
4x+6y=-72 Equation 2
Using substitution method
Make x the subject in equation 1
X=-13-y Equation 3
Substitute for x in equation 2
4x+6y=-72
4 (-13-y) + 6y=-72
-52-4y+6y=-72
-52+2y=-72
2y=-72+52
2y=-20
y=-20/2
y=-10
Substitute y for - 10 in equation 1
X+y=-13
X-10=-13
x=-13+10
x=-3
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Cullen Chambers
12 July, 16:00
0
for x+y is 7+6or 6+7 for 4x+6y is 36+36
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