Question

3+4 =18 and 2+6 = 32 then 5+3 =?

Answer 1

Answer:

8

Step-by-step explanation:

Let to find the answer consider x 8 y in the places of the number then 3x+4y=18-(---(1) 2x+6y=32-(---2)

solve the above equation

(1) 3=>9x+12y=54 (2)* 2=>4x+12y=64 (1) (2)=>5x=-10

x=-2 Substitute x=-2 in (1)

3(-2)+4y=18

4y=18+6

y=24/4 y=6 `

then 5x+3y=5(-2)+3(6) =-10+18 = 8 5+3=8 `

FINAL ANSWER- 8

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Answer 2

Concept

A variable is a situation, number or quantity that can vary or be varied.

Given

3+4=18 and 2+6=32

Find

5+3=?

Step-by-step explanation:

Let the equations be like as under:

3x+4y=18

2x+6y=32

Solving the equations through substitution method

x=(18-4y)/3

Put the value of x in 2x+6y=32 and we get

2(18-4y)/3+6y=32

(36-8y)/3+6y=32

36-8y+18y=96

10y=60

y=6

Put the value of y in x=(18-4y)/3 and we get

x=(18-4*6)/3

x=(18-24)/3

x=-6/3

x=-2

So if we made the required equation then it will be as follows:

=5x+3y

=5*(-2)+3(6)

=-10+18

=8

Hence the answer will be 8.

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