Question

реши уравнения

7х*4х=24
P.S одно из них нарисованно в виде гравитти

Answer 1

1) 7x*4x=24
28x²=24
x²=24/28
x²=6/7
x=√(6/7)
2) (y-2)*3=(3y-4)*8
3y-6=24y-32
21y=26
y=26/21
y=1 5/21

Answer 2

7х*4х=24
$28 {x}^{2} = 24 \\ {x}^{2} = \frac{24}{28} \\ x = \frac{ \sqrt{4 \times 6} }{ \sqrt{4 \times 7} }$
$x = \frac{2 \sqrt{6} }{2 \sqrt{7} } = \frac{ \sqrt{6} }{ \sqrt{7} }$
$\frac{y - 2}{8} = \frac{3y - 4}{3}$
$3(y - 2) = 8(3y - 4) \\ 3y - 6 = 24y - 32 \\ - 21y + 26$
$- 21y + 26 = 0 \\ - 21y = - 26 \\ y = \frac{26}{21} = 1 \frac{5}{21}$