$3.7^2.x-1+6=23.5.3$ $⇔147x+5=345$ $⇔147x=340$ $⇔x=\dfrac{340}{147}$ $\text{Vậy $x=\dfrac{340}{147}$}$ Bình luận
3. `7^2` . x- 1 + 6 = 23 . 5 . 3 => 3. 49 . x- 1 + 6 = 340 => 147 . x = 340 => 147x = 340 => x = `340/147` XIN HAY NHẤT Ạ Bình luận
$3.7^2.x-1+6=23.5.3$
$⇔147x+5=345$
$⇔147x=340$
$⇔x=\dfrac{340}{147}$
$\text{Vậy $x=\dfrac{340}{147}$}$
3. `7^2` . x- 1 + 6 = 23 . 5 . 3
=> 3. 49 . x- 1 + 6 = 340
=> 147 . x = 340
=> 147x = 340
=> x = `340/147`
XIN HAY NHẤT Ạ