Question

решите уравнение 7+x/4=x+4

Answer 1

(7+х)/4=х+4
7+х=4х+16
4х-х=7-16
3х=-9
х=-3
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7+х/4=х+4
28+х=4х+16
4х-х=28-16
3х=12
х=4
Бери,что нужно

Answer 2

$displaystyle 7+ frac{x}{4} =x+4quad bigg| cdot 4\\4(7+ frac{x}{4})=4(x+4) \\28+x=4x+16 quad bigg|-x\\28=3x+16quadbigg|-16\\12=3xquad bigg|:3\\4=x\\boxed{x=4}$