Question

Please solve first question

Answer 1

Answer:

(a) 72+x =105

x = 27

(b) 65+35 = x

100 = x

(c) 60+x = 110

x = 50

(d) 70+45+x = 180

115+x = 180

x = 65

70+65 = y

135 = y

Answer 2

Answer:

1.a) 33

1.b) 100

1.c) 50

1.d 65, 135

Step-by-step explanation:

1.a)

According to formula,

   105 = 72 + x

=>x = 105-72 = 33

1.b)

According to formula,

   x = 65 + 35

=>x = 100

1.c)

According to formula,

       110 = 60 + x

   =>x = 110-60 = 50

1.d)

According to formula,

      70 + 45 + x = 180

  => x = 180 - 115 = 65

According to formula,

y = 70 + 65 = 135