Question

337. Розкрий дужки.
1) 5 (x - 2);
2) (a + 7) · 3;
4) (7a-2b) - 6.
3) 4 · (2x + 3у);
.

Answer 1

5 • (x-2) = 5x-10
(a+7) • 3 = 3a+21
(7a-2b) • 6 = 42a - 12b
4 • (2x+3y) = 8x+12y