Question

1,5x + 0,1x - 0,9x + 3,8 = 10,1​

Answer 1

$1.5x + 0.1x - 0.9x + 3.8 = 10.1$

$0.7x + 3.8 = 10.1$

$0.7x = 10.1 - 3.8$

$0.7x = 6.3$

$x = 6.3 \div 0.7$

$x = 9$