Question

Solve and check the solution in the following equations.

1). x+7=9

3). 15-x=4 ​

Answer 1

Answer:

hey mate hope it helps you....

Step-by-step explanation:

1. x + 7 = 9

x = 9 - 7

= 2

for checking we must put the value of x in the given equation what is given there

: x = 2

2 + 7 = 9

9= 9

so true....

2. 15 - x = 4

- x = 4 - 15

- x. = - 11

cancle( -) sign ....

so x = 11

for checking put the value of x in equation :

15 - 11 = 4

4 = 4

so true.....

Answer 2

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$1). \: x + 7 = 9$

$= \times = 9 - 7$

$= x = 2$

$Check \: LHS= x + 7$

$= 2 + 7$

$= 9 = RHS$

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$2). \: 15 - x = 4$

$= - x = 4 - 15$

$= x = 11$

$Check \: LHS= 15 - 4$

$= 15 - 11$

$= 4 = RHS$