Question

CH: 4 SIMPLE EQUATIONS

1. Check whether the values given in the brackets is a solution to the given equation or not:

(a) n+5=19 (n=1)

(b) 7n+5=19 (n=-2)

2. Write the equations for the following statements.

(a) The sum of numbers x and 4 is 9.

(b) 2 subtracted from y is 8.

(c) 10 times a is 70.​

Answer 1

Answer:

in q1 Put the values of n and if the LHS are equal to thier RHS then the question has the solution given in bracket

in q1 Put the values of n and if the LHS are equal to thier RHS then the question has the solution given in bracket Step-by-step explanation:

in q1 Put the values of n and if the LHS are equal to thier RHS then the question has the solution given in bracket Step-by-step explanation:for q2 a) x+4=9

in q1 Put the values of n and if the LHS are equal to thier RHS then the question has the solution given in bracket Step-by-step explanation:for q2 a) x+4=9 b) y-2=8

in q1 Put the values of n and if the LHS are equal to thier RHS then the question has the solution given in bracket Step-by-step explanation:for q2 a) x+4=9 b) y-2=8 c) 10a=70

Answer 2

Answer:

1

A) It's not a solution

B) It's not a solution

2

A)x=5

B)y=10

C)a=7

Step-by-step explanation:

1]Check whether the values given in the brackets is a solution to the given equation or not:

A)n+5=19. (n=1)

If n=1,than

L.H.S= 1+5=6

Hence 6 is not equal to 19.

B)7n+5=19. (n= -2)

If n= -2, then

LHS= 7(-2)+5

= -14+5

= -9

Hence -9 is not equal to 19.