Question

математика. 18+х=24 45-х=21 х-3=12 х÷7=4​

Answer 1

$1)18 + x = 24 \\ x = 24 - 18 \\ x = 6$

Проверка 18+6=24

$2)45 - x = 21 \\ x = 45 - 21 \\ x = 24$

Проверка 45-24=21

3) $x - 3 = 12 \\ x = 12 + 3 \\ x = 15$

Проверка

15-3=12

4) $x \div 7 = 4 \\ x = 7 \times 4 \\ x = 28$

Проверка 28÷7=4

Answer 2

1) х=24-18 х=6
2)х=-24
3)х=15
4)х=7*4 х=28