Mr John is 7 times as old as his grandson.In 3 years time, the sum of their ages will be 102. How old is Mr John now?

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

☐²

x^☐

√☐

^□√☐

□□

log_□

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

simplify solve for expand factor rationalize

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середина (0, 0), (6, 8)

Solution

(3, 4)

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Медиана (x₁, y₁), (x₂, y₂): (x₂+x₁2 , y₂+y₁2 )

(x₁, y₁)=(0, 0), (x₂, y₂)=(6, 8)

=(6+02 , 8+02 )

Уточнить

=(3, 4)

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

Mr John is 7 times as old as his grandson.In 3 years time, the sum of their ages will be 102. How old is Mr John now?

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