Question
Solve the following equation by trial and error method: $z - 3 = 2z - 5$
✓
Answer
The given equation is $z - 3 = 2z - 5$ We guess and try several values of z to find $L.H.S.$ and $R.H.S.$ and stop when $L.H.S. = R.H.S.$
When $z = 2$, we have $L.H.S. = R.H.S$ So, $z = 2$ is the solution of the given equation.
|
x
|
L.H.S.
|
R.H.S.
|
|
$1$
|
$1 - 3 = -2$
|
$2 \times 1 - 5 = -3$
|
|
$2$
|
$2 - 3 = -1$
|
$2 \times 2 - 5 = -1$
|
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Neelam has $25$ pencils. She gives $\frac{4}{5}$ of them to Meena. How many pencils does Meena get? How many pencils are left with Neelam?
→Split the following shapes into rectangles and find the area of each. (The measures are given in centimetres)
A bag contains $25-$paisa and $50-$paisa coins whose total value is $Rs. 30$. If the number of $25-$paisa coins is four times that of $50-$paisa coins, find the number of each type of coins.
→$45 \ km : 60 \ km$ $= 12$ hours $: 15$ hours
→Simplify:$6\frac{1}{6}-5\frac{1}{5}+3\frac{1}{3}$
→Solve the following equation and verify the answer: $3(x + 6) = 24$
→Following is the choice of sweets of $30$ students of class VI: Ladoo, Barfi, Ladoo, Jalebi, Ladoo, Rasgulla, Jalebi, Ladoo, Barfi, Rasgulla, Ladoo, Jalebi, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo, Rasgulla, Ladoo, Ladoo, Barfi, Rasgulla, Rasgulla, Ladoo.
$i.\ $Arrange the names of sweets in a table using tally marks.
$ii.\ $Which sweet is preferred by most of the students?
→$i.\ $Arrange the names of sweets in a table using tally marks.
$ii.\ $Which sweet is preferred by most of the students?
If $AB = 7.5\ cm$ and $CD = 2.5\ cm$, construct a segment whose length is equal to: $2AB$
→In the other exercises that you did above, did you notice that subtracting a negative number was the same as adding the corresponding positive number?
$50$ chairs and $30$ blackboards were purchased for a school. If each chair costs $Rs. 1065$ and each blackboard cost $Rs. 1645$, find the total amount of the bill.
→