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Jazlynn Hanna
Mathematics
19 April, 00:58
How to solve 4y=x 3x - y=70 using substitution
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Darrell Cochran
19 April, 01:14
0
X = 4y
3x - y = 70
substitute the x in the second equation with the other half of the first equation.
3 (4y) - y = 70
12y - y = 70
11y = 70
y = 6.36 repeating, or 6 4/11
now use this to solve first equation
x = 4 (6 4/11)
x = 25.45 repeating
done
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