Question

Помогите решить методом замены (((

Answer 1

$8x + 49x + 7x + 2 = 0 \\ 64x + 2 = 0 \\ 64x = 0 - 2 \\ 64 x = - 2 \\64 x = 2 \\ x = 64 \div 2 \\ x = 32$
х=32