Question

Упростить 3(3d-1)+7(2d+1) при d =2 4/230 ​

Answer 1

3(3d - 1) + 7(2d + 1) = 9d - 3 + 14 d +7 = 23d + 4

При d = $\frac{24}{230}$: 23 * $\frac{24}{230}$ + 4 = $\frac{552}{230\\}$ + 4 = 2,4 + 4 = 6,4