Question

х•4=12:3, 15:5+х=12 реши уравнения

Answer 1

X·4=12:3

X=12:4*4

X=1

15:5+x=12

3+x=12

x=9

Answer 2

$x \times 4 = 12 \div 3 \\ 4x = 4 \\ x = 1 \\ \\ - - - - - - - - - \\ \\ 15 \div 5 + x = 12 \\ 3 + x = 12 \\ x = 12 - 3 \\ x = 9$