1)6,870+(n -49,980)=7436
6,870+n-49,980=7436
n-43,11=7436
n=7436+43,11
n=7479,11
2)(74,109-t)+3,367 = 70,258
74,109-t+3,367=70,258
-t+77,476=70,258
-t=70,258-77,476
-t=-7,218
t=7,218
1)6,870+(n -49,980)=7436
6,870+n-49,980=7436
n-43,11=7436
n=7436+43,11
n=7479,11
2)(74,109-t)+3,367 = 70,258
74,109-t+3,367=70,258
-t+77,476=70,258
-t=70,258-77,476
-t=-7,218
t=7,218