A+b=180,also a-b=80.find a and b
Answers
Answered by
81
add both the equation
a+b+a-b=180+80
2a. =260
a. =260/2=130
now from 1st equation a+b=180 substitute a
130+b=180
b=180-130
b=50
a+b+a-b=180+80
2a. =260
a. =260/2=130
now from 1st equation a+b=180 substitute a
130+b=180
b=180-130
b=50
Answered by
19
a+b =180 (1)
a -b = 180
a=80+ b
fill value of a in ( 1)
80 + b+ b =180
80+ 2b =180 2b= 180 -80
2b= 100
b= 100÷ 2
b= 50
put value of b in (1)
a+ 50= 180
a= 180- 50 =130
hence a= 130 and b= 50
a -b = 180
a=80+ b
fill value of a in ( 1)
80 + b+ b =180
80+ 2b =180 2b= 180 -80
2b= 100
b= 100÷ 2
b= 50
put value of b in (1)
a+ 50= 180
a= 180- 50 =130
hence a= 130 and b= 50
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