VII
Matematika
Terimakasih Kak :)
a. 22
b. 54
c. 75
d. 81
Matematika
Terimakasih Kak :)
a. 22
b. 54
c. 75
d. 81
" Life is not a problem to be solved but a reality to be experienced! "
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Penyelesaian:
x+13=2x-9
22=x
Maka
y+64=180°-(2x-9)
y+64=180°-(44-9)
y+64=180°-35°
y+64=145°
y=81°(d.)