Question

Нужно решение в дробях

Answer 1

1)

$2 \times x + 4 \div 2 = 18$

$2x + 2 = 18$

$2x = 16$

$x = 8$

2)

$2 \times x - 3 \times 4 = 16$

$2x - 12 = 16$

$2x = 28$

$x = 14$

3)

$2 \times x + 5 \div 2 = 10$

$2x + 2.5 = 10$

$2x = 7.5$

$x = 3.75$