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3 years ago

What is the solution of the system of equations y =2x - 3

Mathematics

1 answer:

kherson [118]3 years ago

7 0

Answer:

-37/5= y

x=11/5

Step-by-step explanation:

4x-3y=31

-3y=-4x+31 regroup it to match the other

-2 y=(2x-3)(-2) multiply by -2 to get -4x

-3y=-4x+31

-2y=-4x+6 adding

-5y=37 divide

-37/5= y

4x-3(-37/5)=31

x=11/5

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Mama L [17]

Answer:

z = 120º

Step-by-step explanation:

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t = 60

2t = z

z = 120º

This is all based on the fact there there are 360º in a quadrilateral.

5 0

3 years ago

What is the value of x in the equation 3x-4y=65, when y=4?

Softa [21]

Answer:

$\boxed{ \bold{ \huge{ \boxed { \sf{x = 27}}}}}$

Step-by-step explanation:

Given, value of y = 4

To find : Value of x

$\sf{3x - 4y = 65}$

plug the value of y

$\dashrightarrow{ \sf{3x - 4 \times 4 = 65}}$

Multiply the numbers : 4 and 4

$\dashrightarrow{ \sf{3x - 16 = 65}}$

Move 16 to right hand side and change it's sign

$\dashrightarrow{ \sf{3x = 65 + 16}}$

Add the numbers : 65 and 16

$\dashrightarrow{ \sf{3x = 81}}$

Divide both sides by 3

$\dashrightarrow{ \sf{ \frac{3x}{3} = \frac{81}{3} }}$

Calculate

$\dashrightarrow{ \sf{ x = 27}}$

Hope I helped!

Best regards! :D

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labwork [276]

Answer:

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gavmur [86]

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