-----dan caranya______

a. 56°25'+12°52' = 68°77'
b. 15°32'45''+12°29'35'' = 27°61'25''
c. 16°14'28''+23°45'32'' = 39°59'60"
d. 46°17'15''+31°46' = 46°17'15''

maaf kalau salah