Question

Please Help I will give 55 points.
Marcus earns money from feeding cats and answering emails. He earns 7$ per cat he feeds and 0.20 $ per email he answers. Marcus answered 140 emails and earned 49$ last week.
Part A.
Create an equation to determine how many cats he fed.
Part B.
Solve this equation justifying each step with an algebraic property of equality.
Part C.
How many cats did Marcus feed last week

Answer 1

5 points ka hai bada aaya 55 wala

Answer 2

how I can't understand part b