Question

1. Solve the following equations & check your answer!:
i) 5x - 2 = 18
ii) 1/4y + 1/2 = 5
iii) 3/5x - 6 = 3
iv) 3x + 1/5 = 2 - x
v) 8x + 5 = 6x - 5

Chapter= Linear Equation In One Variable​

Answer 1

Answer:

5×-2=18 5×=18+2 5×20 ×=20/5 ×=4

Step-by-step explanation:

let us check it correct or not 5×4-2=18 20-2=18 18+2=20

Answer 2

Answer:

(i)5x−2=18

⇒5x=20

⇒

k=4

check:

LHS⇒5(4)−2=18=RHS

∴

x=4

(ii)

4

1

y+

2

1

=5

y+2=20

⇒

y=18

Check:

LHS⇒

4

1

(18)+

2

1

⇒

4

18+2

⇒5=RHS

∴

y=18

(iii)3x+

5

1

=2−x

4x=2−

5

1

4x=

5

9

x=

20

9

check:

LHS⇒3x+

5

1

=3(

20

9

)+

5

1

⇒

20

31

⇒2−

20

9

=RHS

⇒

x=

20

9

(iv)8x+5=6x−5

2x=−10

x=−5

check:

LHS⇒8x+5⇒8(−5)+5

⇒−35⇒6(−5)−5

⇒RHS

⇒

x=−5

verified_toppr

Step-by-step explanation:

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