Three eighths minus 0.125 multiplied by four thirteenth

Three eighths minus 0.125 multiplied by four thirteenth

-3.125 times 7 + 3 and 1 / 8 times (- 13) - 3.125

-3.125*7+3 1′8 *（-13）-3.125=-3.125（7+13+1）=-3.125*21=-65.625

Minus 0.125 times minus 3.8-1 minus 0.125 times minus 4.8-7

Minus 0.125 times minus 3.8-1 minus 0.125 times minus 4.8-7
=0.125x3 and 1 / 8 + 0.125x4 and 7 / 8
=125x (1 / 3 / 8 + 7 / 4 / 8)
=1 / 8 x 8
=1

3×4/2+4×5/2+5×6/2… +Simple calculation of 97 × 98 / 1 + 98 × 99 / 1

3×4/[1]+4×5/[1]+5×6/[1]… +97×98/1+98×99/1=1/3-1/4+1/4-1/5+...+1/98-1/99
=1/3-1/99
=32/99