Explicación paso a paso:
a-) 7=12 + 5h
-12+7= 5h
-5=5h
-1 = h
b-) 24-5w=9
24-9=5w
15=5w
w=3
c-) -3t-15=-9
-3t= -9+15
-3t= +6
t= +6/-3
t= -2
d-) 11-6k=13
11-13= 6k
6k= -2
k= -1/3
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Verified answer
Explicación paso a paso:
a-) 7=12 + 5h
-12+7= 5h
-5=5h
-1 = h
b-) 24-5w=9
24-9=5w
15=5w
w=3
c-) -3t-15=-9
-3t= -9+15
-3t= +6
t= +6/-3
t= -2
d-) 11-6k=13
11-13= 6k
6k= -2
k= -1/3