Question

Помогите пж буду рада) дам 20

Answer 1

1)

$5.4 \div (x + 1.6) = 1.5 \\ x + 1.6 = 5.4 \div 1.5 \\ x + 1.6 = 54 \div 15 \\ x + 1.6 = 3.6 \\ x = 3.6 - 1.6 \\ x = 2$

2)

$4.13x - 0.17x = 9.9 \\ 3.96x = 9.9 \\ x = 9.9 \div 3.96 \\ x = 990 \div 396 \\ x = 2.5$

3)

$5.3x + 4.8x - 5.13 = 43.35 \\ 10.1x = 43.35 + 5.13 \\ 10.1x = 48.48 \\ x = 48.48 \div 10.1 \\ x = 484.8 \div 101 \\ x = 4.8$