Please solve this by substitution method!
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Answer:
3 x + 7 y = 37
⇒ 3 x = 37 - 7 y
⇒ x = ( 37 - 7 y ) / 3 -----(1)
Second equation is :
5 x + 6 y = 39
Substituting the value of x from (1) we get :-
⇒ 5 ( 37 - 7 y ) / 3 + 6 y = 39
⇒ ( 185 - 35 y ) / 3 + 6 y = 39
⇒ ( 185 - 35 y + 18 y ) / 3 = 39
⇒ 185 - 17 y = 117
⇒ - 17 y = 117 - 185
⇒ - 17 y = - 68
⇒ y = - 68/(-17)
⇒ y = 4
The value of y is 4 .
x = ( 37 - 7 y ) / 3
⇒ x = ( 37 - 7×4 )/3
⇒ x = ( 37 - 28 ) / 3
⇒ x = 9/3
⇒ x = 3
The value of x is 3 .
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