Question

Составь и реши уравнения по таблице

Answer 1

90+x=4•10+60
90+x=100
x=100-90
x=10

Answer 2

90 - x = 23
x = 90 - 23
x = 67

4 * 10 + x = 140
40 + x = 140
x = 140 - 40
x = 100

60 + x = 76
x = 76 - 60
x = 16