Question

a+b=60a-b=30 a and b are

Answer 1

Answer:

A=45,B=15

45+15=60

45-15=30

Step-by-step explanation:

A- B = 30, (1) A + B = 60. (2) Once you see two equations like (1) and (2), add them immediately. You will get 2A = 30 + 60 = 90 ---> A =  = 45. Thus you just found one unknown. Now from (2) B = 60 - A = 60 - 45 = 15. The problem is solved. A = 45, B = 15.

Answer 2

${\fbox{\huge\sf\red{Solution}}}$

ANSWER

$\huge\sf\pink{A=>45}$

$\huge\sf\pink{B=>15}$

EXPLANATION

GIVEN-:

$\huge\sf\blue{A+B=> 60}$-equation :1

$\huge\sf\blue{A-B=>30}$-equation :2

NOW-:

Let's find the possible values.

• Less the eq.2 from eq.1

$\huge\sf\purple{a+b=60}$

$\huge\sf\purple{a-b =30}$

$\huge\sf\purple{ 2b=30}$

$\huge\sf\purple{ b=15}$

• On putting the value of b in eq.1

$\huge\sf\green{a+15=60}$

$\huge\sf\green{a=60-15}$

$\huge\sf\green{a=45}$

so,

$\huge\sf\pink{A=>45}$

$\huge\sf\pink{B=>15}$

LET'S CHECK -:

• $\huge\sf{a+b=60}$

By putting value

$\huge\sf\orange{45+15=60}$

• $\huge\sf{a-b=30}$

By putting value

$\huge\sf\orange{45-15=30}$