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-6< 2x-4< 4

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

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Steps Examples

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x+y+z=25, 5x+3y+2z=0, y−z=6

Solution

x=−1315 , y=1435 , z=1135

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Solve by:

Solve by elimination

Solve by substitution

Solve by Cramer's rule

Solve by Gaussian elimination

One step at a time

[

x+y+z=25

5x+3y+2z=0

y−z=6

]

Multiply x+y+z=25 by 5 : 5x+5y+5z=125

[

5x+5y+5z=125

5x+3y+2z=0

y−z=6

]

Subtract the equations

5x+3y+2z=0

−

5x+5y+5z=125

−2y−3z=−125

[

5x+5y+5z=125

−2y−3z=−125

y−z=6

]

Multiply y−z=6 by 2 : 2y−2z=12

[

5x+5y+5z=125

−2y−3z=−125

2y−2z=12

]

Add the equations

2y−2z=12

−2y−3z=−125

−5z=−113

[

5x+5y+5z=125

−2y−3z=−125

−5z=−113

]

Solve −5z=−113 for z: z=1135

For −2y−3z=−125 plug in z=1135

Solve −2y−31135 =−125 for y: y=1435

For 5x+5y+5z=125 plug in y=1435 , z=1135

Solve 5x+51435 +51135 =125 for x: x=−1315

The solutions to the system of equations are:

x=−1315 , y=1435 , z=1135

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أهلاً, اطرح سؤالا حول x+y+z=25,5x+3y+2z=0,y−z=6 أو اختر من الخيارات أدناه

حل بواسطة: substitution

حل بواسطة: Cramer's rule

حل بواسطة: Gaussian elimination

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

-6< 2x-4< 4

Solution

Solution steps

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