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navik [9.2K]
3 years ago
7

Solve for q/18 = 5 q =

Mathematics
2 answers:
8090 [49]3 years ago
8 0
<span>q/18 = 5 // - 5

q/18-5 = 0

1/18*q-5 = 0 // + 5

1/18*q = 5 // : 1/18

q = 5/1/18

q = 90

q = 90
</span>
Nat2105 [25]3 years ago
4 0
Q = 0

Solve for q.
Multiply both sides of the equation by <span>18.

</span><span><span>
q=5q⋅<span>(18)


</span></span></span>Simplify the right side.


Multiply <span><span>5q</span></span> by <span>18</span> to get <span><span>5q<span>(18).


</span></span></span><span><span>q=5q<span>(18)


</span></span></span>Multiply <span>18</span> by <span>5</span> to get <span>90</span>.


<span><span>q=90q


</span></span>Move all terms containing <span>q</span> to the left side of the equation.



Since <span><span>90q</span></span> contains the variable to solve for, move it to the left side of the equation by subtracting <span><span>90q</span></span> from both sides.


<span><span>q−90q=0


</span></span>Subtract <span><span>90q</span></span> from <span>q</span> to get <span><span>-89q</span></span>.


<span><span>−89q=0


</span></span>Divide each term by <span><span>-89</span></span> and simplify.

- \frac{89q}{-89} =  \frac{0}{-89}

Divide each term in <span><span>−89q=0</span></span> by <span><span>-89</span></span>.



Simplify the left side of the equation by cancelling the common factors.



<span><span>q= 0/<span><span>89


</span></span></span></span>Divide <span>0</span> by <span><span>−89</span></span> to get <span>0</span>.


<span>q=<span>0</span></span>
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(-2x+3y=8....(i)<br>( x+y=2.........(ii)<br>solve by elumination method and substitution​
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Answer:

 x = -2/5

 y = 12/5

Step-by-step explanation:

Substitution method;

-2x + 3y = 8  -----------(i)

x + y =2   -----------(ii)

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substitute the value of x in equ (i)

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substitute the value of y in equ (ii)

x + 12/5 = 2

        x = 2 - 12/5

           = 2*5/1*5 - 12/5  

          = 10 -12/5 = -2/5

Ans: x = -2/5

       y = 12/5

elimination method:

-2x + 3y = 8  -----------(i)

x + y =2   -----------(ii)

                                    (i)   ====>    -2x + 3y = 8

multiply equ (ii) by 2         ====>    <u>  2x + 2y = 4</u>

             add (i) and (ii)                             5y = 12

                                                                   y = 12/5

Substitute in equ (ii)

x + 12/5 = 2

        x = 2 - 12/5

           = 2*5/1*5 - 12/5  

          = 10 -12/5 = -2/5

Ans: x = -2/5

       y = 12/5

                                                       

               

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