Answer: the man is 58!
Step-by-step explanation: please mark brainliest
we could use this equation
168=400-4a an a= uknown age
-400 -400
-232=-4a
divide by -4 on both sides to get the variable by itself
58=a
a=58
and to double check we can do this
168=400-4(58) by susbtuting the variable
168=400-232
168=168 correct
