3 years ago

2x+y=−1.5 y=3.5x+15.

Mathematics

1 answer:

Tomtit [17]3 years ago

5 0

Answer:

x=-3, y=4.5

Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago

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dalvyx [7]

Answer:

$\large\boxed{x=\dfrac{5}{4},\ y=\dfrac{15}{16}}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}y=\dfrac{3}{4}x&(1)\\\dfrac{5}{2}x+2y=5&(2)\end{array}\right\\\\\text{Substitute}\ (1)\ \text{to}\ (2):\\\\\dfrac{5}{2}x+2\left(\dfrac{3}{4}x\right)=5\\\\\dfrac{5}{2}x+\dfrac{3}{2}x=5\\\\\dfrac{5+3}{2}x=5\\\\\dfrac{8}{2}x=5\\\\4x=5\qquad\text{divide both sides by 4}\\\\x=\dfrac{5}{4}$

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4 years ago

Read 2 more answers