Question

Afla numarul necunoscut!

Answer 1

a - 256 = 604 => a = 604 + 256 => a = 860

520 + b = 601 => b = 601 - 520 => b = 81

45 : b = 9 => b = 45 × 9 => b = 405

a + 400 = 700 => a = 700 - 400 => a = 300

a × 8 = 64 => a = 64 : 8 => a = 8

b : 9 = 8 => b = 9 × 8 => b = 72

Answer 2

Explicație pas cu pas:

a+400=700

a=700-400

a=300