Х+7=70 х-7=70 42+Х=82 10-Х=3

Question

Х+7=70 х-7=70 42+Х=82 10-Х=3

Answer 1

x+7=70 x-7=70 42+x=82 10-x=3 x=70-7 x=70+7 x=82-42 x=10-3 x=63 x=77 x=40 x=7