Question

Please solve by substituting method.. ​

Answer 1

Answer:

Step-by-step explanation:

x+y=180-----------1

x-y=18-----------2

Adding 1 and 2

2x = 198

x=198÷2

x=99

Substituting x=99 in 2

99-y=18

99-18=y

81=y

y=81

Solution(99,81)

Answer 2

hiii..

x+y=180......(¡)

x-y=18......(¡¡)

from (¡¡)

x=18+y.....(¡¡¡)

put the value of x in equn (¡)

18+y+y=180

2y=180-18

2y=162

y=81

put y =81 in (¡¡¡)

x=18+81

x=99

....!!!...

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