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15-06-2017
Mathematics

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Solve the system by substitution. Check your solution. 0.5x+0.25y=36, y+18=16x

Respuesta :

20-06-2017

0.5x+0.25y=36
y+18=16x
y=16x-18
0.5x+0.25(16x-18)=36
0.5x+4x-4.5=36
4.5x-4.5=36
4.5x=40.5
x=9
16(9)=y+18
144=y+18
y=126

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