Answer:
The answer has no solution because it is infinite and that's your vairiable
It's 120*0.42 = 50.4 so 50.4 is the answer
3/4 is 0.75 as a decimal so 4 x 0.75 = 3
I think the answer is (-2,2)
First you convert kilograms to pounds,
1 kilogram = 2.205 pounds
next you times the number of pounds per kilogram by the number of kilograms given that need to be turned into pounds.
80 times 2.205 = 176.4
next you subtract to get the answer
176.4 - 135= 41.4
so Ms. Johnson weighs 41.4 pounds less than herr husband