Question

(ii) 2x = 5 + 4 3х - 2y + 16 = 0.​

Answer 1

Answer:

x=12

y=4

Step-by-step explanation:

2x=5y+4

3x-2y+16=0

x=12,y=4

Answer 2

Step-by-step explanation:

$\mathtt{2x = 5y + 4}$

$\mathtt{x = \frac{5y + 4}{2} }$

$\mathtt{3( \frac{5y + 4}{2} ) - 2y + 16 = 0}$

$\mathtt{\frac{15y + 12}{2} - 2y + 16 = 0}$

$\mathtt{ 15y - 12 - 4y + 32 = 0 }$

$\mathtt{11y + 20 = 0}$

$\mathtt{11y = - 20}$

$\boxed{\mathtt \red{y = - \frac{20}{11} }}$

$\mathtt{x = \frac{5y + 4}{2} }$

$\mathtt{x = \frac{5( - \frac{20}{11}) + 4 }{2} }$

$\mathtt{x = \frac{ - \frac{100}{11} + 4 }{2} }$

$\mathtt{x = \frac{ - \frac{ 100 + 44}{11} }{2} }$

$\mathtt{x = \frac{ - \frac{144}{11} }{2} }$

$\mathtt{x = - \frac{144}{11 \times 2} }$

$\mathtt{x = - \frac{144}{22} }$

$\boxed{\mathtt \red{x = - \frac{72}{11} }}$

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