Question

3a + 2b -c quando a=5 b=3 e c=1

Answer 1

$3a + 2b - c = \\ 3 \times 5 + 2 \times 3 - 1 = \\ 15 + 6 - 1 = \\20$

Answer 2

15 + 6 - 1

21-1

20

3x5=15  2x3=6  -cx1= -1