Question

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Answer 1

Answer:

Q. 39

1) 2x-5=11

x=8

2×8=16-5=11

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

42) let three consecutive numbers be x, x+1,x+2

ATQ

X+x+1+x+2= 108

3 x = 105

x= 35

therefore three consecutive numbers are 35 ,35+1 ,35+2

= 35+36+37

= 108

LHS =RHS

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LET US START

Q 43

let breadth be x

then length be 3x+1

ATQ

perimeter of rectangle = 2(l+b)

42 = 2(3x+1+x)

42 = 8 x +2

8x= 40

x= 5

Then length = 3x+1

= 3×5+1

= 16

LET us check= 2(16+5)

= 2(21)

= 42

SO LHS =RHS