Помогите плиз заранее спасибо а....

Question

Помогите плиз заранее спасибо а. (2/4+3/4):5=.....б.(1/2+1/3)=....в.(4/3+1/9)•4=....г.(1/2-1/3)•3=....д.(5/6-1/4):7=

Answer 1

а. (2/4+3/4):5=5/4 *1/5=1/4

б.(1/2+1/3)=3/6+2/6=5/6

в.(4/3+1/9)•4=(12/9+1/9)*4=13/9 * 4=52/9=5.7/9

г.(1/2-1/3)•3=(3/6-2/6)*3=1/6 * 3 = 1/2

д.(5/6-1/4):7= (10/12-3/12) : 7 = 7/12 * 1/7 = 1/12

Comments

(1/2+1/3)•2=? Помоги

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(1/2+1/3)•2=(3/6+2/6)*2=5/6*2=10/6=5/3=1. 2/3