Question 1196134
 Sandra is 63 years older than her grandson.
s = g + 63
 Five years ago, she was 4 times as old as he was.
s - 5 = 4(g-5)
distribute the 4
s - 5 = 4g - 20
s = 4g - 20 + 5
s = 4g - 15
replace s with (g+63) from the 1st statement
g + 63 = 4g - 15
63 + 15 = 4g - g
78 = 3g
g = 78/3
g = 26 is the grandson's age
How old is she?
Using the 1st equation, find s
s = 26 + 63
s = 89 yr is Sandra's age
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See if that checks out in the statement
"Five years ago, she was 4 times as old as he was."
89 - 5 = 4(26-5)
84 = 4*21