A) n+31=48
n=48-31
n=17
B)
m-13=29
m=29+13
m=42
C) 4g-13=47
4g=47+13
4g=60/:4
g=15
D) 7c+22=99
7c=99-22
7c=77/:7
c=11
a)n=48-31
b)m=29+13
c)4g=47+13
d)7c=99-22
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A) n+31=48
n=48-31
n=17
B)
m-13=29
m=29+13
m=42
C) 4g-13=47
4g=47+13
4g=60/:4
g=15
D) 7c+22=99
7c=99-22
7c=77/:7
c=11
a)n=48-31
n=17
b)m=29+13
m=42
c)4g=47+13
4g=60/:4
g=15
d)7c=99-22
7c=77/:7
c=11