Question

Afla termenul necunoscute x+6×7=100;9×10-x=15;27×37-x=599

Answer 1

Răspuns:

x + 6 x 7 = 100

x + 42 = 100

x = 100- 42

x = 58

9 x 10 - x = 15

90 - x = 15

x = 90 - 15

x = 75

27 x 37 - x = 599

999-x = 599

x = 999-599

x = 400

Sper ca te-am ajutat!

Answer 2

Explicație pas cu pas:

X+6×7=100

X+42=100

X=100-42

X=58

v:58+6×7=58+42=100

9×10-X=15

90-X=15

X=90-15

X=75

v:9×10-75=90-75=15

27×37-X=599

999-X=599

X=999-599

X=400

v:27×37-100=999-400=599