Question

120000-80000x=y-40000 (1). 300000-20000x=y+80000 (2). from (1) & (2) x value will be 5, but how can will be came?​

Answer 1

$\begin{gathered}\small\green{{{\fcolorbox{lightgreen} {lightgreen}{ {☑verified \: answer}}}}}\\\end{gathered}$$\green{\fcolorbox{green}{red}{\large{\fcolorbox{blue}{lime}{{\fcolorbox{white}{white}{☑verified answer✯}}}}}}$

$\pink{▬▬▬}$$\red{▬▬▬}$$\green{▬▬▬}$$\blue{▬▬▬}$$\orange{▬▬▬}$

Step by Step Solution

More Icon

System of Linear Equations entered :

[1] 120000-8000x=y-40000

[2] 300000-20000x=y+80000

$\pink{▬▬▬}$$\red{▬▬▬}$$\green{▬▬▬}$$\blue{▬▬▬}$$\orange{▬▬▬}$

Equations Simplified or Rearranged :

[1] -8000x - y = -160000

[2] -20000x - y = -220000

$\pink{▬▬▬}$$\red{▬▬▬}$$\green{▬▬▬}$$\blue{▬▬▬}$$\orange{▬▬▬}$

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = -20000x + 220000

// Plug this in for variable y in equation [1]

[1] -8000x - (-20000x+220000) = -160000

[1] 12000x = 60000

// Solve equation [1] for the variable x

[1] 12000x = 60000

[1] x = 5

$\pink{▬▬▬}$$\red{▬▬▬}$$\green{▬▬▬}$$\blue{▬▬▬}$$\orange{▬▬▬}$

// By now we know this much :

x = 5

y = -20000x+220000

// Use the x value to solve for y

y = -20000(5)+220000 = 120000

$\pink{▬▬▬}$$\red{▬▬▬}$$\green{▬▬▬}$$\blue{▬▬▬}$$\orange{▬▬▬}$

Solution :

$\tt{x,y}$ = $\tt{5,120000}$

$\pink{▬▬▬}$$\red{▬▬▬}$$\green{▬▬▬}$$\blue{▬▬▬}$$\orange{▬▬▬}$

${\huge{\red{\boxed{\green{\boxed{\blue{\boxed{\orange{\boxed{\pink{\boxed{\mathcal\purple{{x,y}= {5,120000}}}}}}}}}}}}}}$

Answer 2

nahi aata kya karu¿.??