Question

170-(18+2×a):5=10



[(b×14-784:14):(52-144:6)]×100=1 000​

Answer 1

Răspuns:

Explicație pas cu pas:

170-(18+2×a):5=10

(18 + 2 x a) : 5 = 170 - 10 = 160

18 + 2 x a = 5 x 160 = 800

2 x a = 800 - 18 = 782

a = 782 : 2 = 391

________________

[(b×14-784:14):(52-144:6)]×100=1 000​

(b×14-784:14):(52-144:6) = 1000 : 100 = 10

(b×14 - 56) : (52 - 24) = 10

(b×14 - 56) : 28 = 10

b×14 - 56 = 28 x 10 = 280

b x 14 = 280 + 56 = 336

b = 336 : 14 = 24