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Tasya [4]
2 years ago
5

Please!!! I’ll mark Brainliest!! I really need help!!!

Mathematics
1 answer:
Tatiana [17]2 years ago
5 0

Answer:

(x, \:  \: y) = (4, \:  \:  -  \frac{1}{4} )

Step-by-step explanation:

\frac{1}{4} x + \cancel{ 1 \frac{1}{2} y} =  \frac{5}{8}...(1)  \\  \\  \frac{3}{4} x  - \cancel{ 1 \frac{1}{2} y} = 3 \frac{3}{8} ...(2) \\  -  -  -  -  -  -  -  -  - \\(adding\: equations\: 1 \:\&\:2) \\ ( \frac{1}{4}  +  \frac{3}{4} )x =  \frac{5}{8}  + 3 \frac{3}{8}  \\  \\  \frac{4}{4} x =  \frac{5}{8}  +  \frac{27}{8} \\  \\   x =  \frac{32}{8} \\  \\ x = 4 \\  \\ plug \: x = 4 \: in \: equation \: (1) \\  \\  \frac{1}{\cancel 4}  \times \cancel 4 + 1 \frac{1}{2} y =  \frac{5}{8}  \\  \\ 1 +  \frac{3}{2} y =  \frac{5}{8}  \\  \\ \frac{3}{2} y =  \frac{5}{8}   - 1\\  \\ \frac{3}{2} y =  \frac{5 - 8}{8}\\  \\ \frac{3}{2} y =  \frac{ - 3}{8}\\  \\ y =   \frac{ - 3}{8} \times  \frac{2}{3}  \\  \\ y =  \frac{1}{4}  \\  \\ (x, \:  \: y) = (4, \:  \:  -  \frac{1}{4} )

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