Question

1) 2+3а при а = 4, -5
2)7-2b при b = -1, 3
3)8c -9 при c = 3, -2
4) 4+5d при d= -3, 6

Answer 1

1) 2+3×4=14
2+3×(-5)= -13
2) 7-2×(-1)=7+2=9
7-2×3=1
3) 8×3-9=24-9=15
8×(-2)-9= -16-9= -25
4) 4+5×(-3)= -11
4+5×6=34