Решить умножение2/7*(5 1/4)-4 11/2*(-1 1/3)3,6*(-2/3)-4/7*4,2-2,8*(-1 1/7)-2 1/3*0,125

Question

Решить умножение
2/7*(5 1/4)
-4 11/2*(-1 1/3)
3,6*(-2/3)
-4/7*4,2
-2,8*(-1 1/7)
-2 1/3*0,125

Comments

плиз

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ой - -4 1/2

Answer 1

2/7 * 21/4 = 3/2 = 1,5
-9/2 * (-4/3) = -3 * (-2) = 6
36/10 * (-2/3) = -12/5 = -2,2
-4/7 * 42/10 = -2 * 6/5 = -12/5 = -2,4
-28/10 * (-8/7) = -4/5 * (-4) = 16/5 = 3,2
-7/3 * 125/1000  = -875/3000 = -175/600 =-35/120 = -7/24