Question

4(3y+4)=7.6 with check​

Answer 1

Answer:

4(3y+4)=7.6

12y + 16 = 7.6

12y = 7.6-16

12y = -8.4

y = -8.4/12

y = -0.7

OR

4(3y+4)=7.6

3y+4=7.6/4

3y + 4 = 1.9

3y = 1.9 - 4

3y = -2.1

y = -2.1/3

y = -0.7

Now putting value of  y

4(3(-0.7) + 4)

4(-2.1 + 4)

4(1.9)

=7.6

--- Hence Proved

Step-by-step explanation:

First We have just solved the equation to find the value of Y and when we get the value of Y we Put it in the equation to check whether the answer is same or not. When we checked we get 7.6 it means the answer is correct.

--- Hence Proved

Answer 2

SOLUTION

TO DETERMINE

The solution with check

$\displaystyle \sf{4(3y + 4) = 7.6 }$

EVALUATION

Here the given equation is

$\displaystyle \sf{4(3y + 4) = 7.6 }$

We find the value of y as below

$\displaystyle \sf{4(3y + 4) = 7.6 }$

$\displaystyle \sf{ \implies (3y + 4) = \frac{7.6}{4} }$

$\displaystyle \sf{ \implies (3y + 4) = 1.9 }$

$\displaystyle \sf{ \implies 3y = 1.9 - 4 }$

$\displaystyle \sf{ \implies 3y = - 2.1}$

$\displaystyle \sf{ \implies y = - \frac{2.1}{3} }$

$\displaystyle \sf{ \implies y = - 0.7}$

Hence the required solution is y = - 0.7

Check :

The given equation is

$\displaystyle \sf{4(3y + 4) = 7.6 }$

Putting y = - 0.7 in LHS we have

LHS

$\displaystyle \sf{ = 4 \{3 \times ( - 0.7) + 4 \} }$

$\displaystyle \sf{ = 4 \{ - 2.1+ 4 \} }$

$\displaystyle \sf{ = 4 \times 1.9 }$

$\displaystyle \sf{ = 7.6 }$

RHS = 7.6

Hence checked

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