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NISA [10]
3 years ago
13

X+y=4 and x-y=6 substitution

Mathematics
2 answers:
klasskru [66]3 years ago
5 0
Both y’s would automatically cancel so all you have left is 2x=10. divide 2 on each side and the 2s on the left cancel. 10/2=5 so x=5. then substitute the 5 into either equation (preferably x+y=4). then subtract 5 on each side and the 5s on the left again cancels out. so you have y=4-5 and y= -1. hope this helps you!!
vlabodo [156]3 years ago
4 0
Y = -1
x = 5
jeng jeng jeng
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and we can write ...
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