Question

afla x daca 1x7 x 7=1029

Answer 1

$1x7 \times 7 = 1029$
$1x7 = 1029 \div 7$
$1x7 = 147$
$x = 4$

Answer 2

$1x7 \times 7 = 1029 \\ 1x7 = 1029 \div 7 \\ 1x7 = 147 \\ r \: \: \: \: x = 4$