Question

Решите уравнение с решением б)3х=2; в)10: х=100; г)3+0,5х=6; д)(7-х)+2=8

Answer 1

Б)
$3x = 2 \\ x = \frac{2}{3}$
в)
$10 \div x = 100 \\ x = \frac{10}{100} \\ x = \frac{1}{10} = 0.1$
г)
$3 + 0.5x = 6 \\0 .5x = 6 - 3 \\ 0.5x = 3 \\ x = 3 \div 0.5 = 3 \div \frac{1}{2} = 3 \times 2 = 6 \\ x = 6$
д)
$(7 - x) + 2 = 8 \\ 7 - x = 8 - 2 \\ 7 - x = 6 \\ 7 - 6 = x \\ x = 1$