Question

1) (×+6,5)-7,9=18,4. 2)(×-183, 8)×2,6=39,52

Answer 1

1) x+6.5-7.9= 18.4
x-1.4=18.4
x=18.4+1,4
x=19.8

2) 2.6x-477.88=39.59
2.6x=39.59+477.88
2.6x=517.4
x=199

Answer 2

$1)(x + 6.5) - 7.9 = 18.4 \\ x + 6.5 - 7.9 = 18.4 \\ x = 18.4 + 7.9 - 6.5 \\ x = 26.3 - 6.5 \\ x = 19.8$
$2)(x - 183.8) \times 2.6 = 39.52 \\ 2.6x - 477.88 = 39.52 \\ 2.6x = 39.52 + 477.88 \\ 2.6x = 517.4 \\ x = 517.4 \div 2.6 \\ x = 199$