Question

Afla numerele necunoscute a)×5=45 8×=32 b) :6=7 81:=9 c) 296-=131 -112=324 103+=426

Answer 1

Răspuns:

$9 \times 5 = 45 \\ 8 \times 4 = 32 \\ 42 \div 6 = 7 \\ 81 \div 9 = 9 \\ 296 - 165 = 131 \\ 436 - 112 = 324 \\ 103 + 323= 426$

Answer 2

$x \times 5 = 45 \\ x = 45 \div 5 \\ x = 9$

$8 \times x = 32 \\ x = 32 \div 8 \\ x = 4$

$81 \div x = 9 = > x = 9$

$296 - x = 131 = > x = 165$

$103 + x = 426 = > x = 426 - 103 = 323$