Question

1225:[(13*a-30):3-10]=7 calculeaza necunoscuta

Answer 1

1225:[(13*a-30):3-10]=7
(13*a-30):3-10 = 1225:7
(13*a-30):3-10 = 175
(13*a-30):3 = 175+10
(13*a-30):3 = 185
13*a-30 = 185*3
13*a-30 = 555
13*a = 555+30
13*a = 585
a = 585:13
a = 45

Answer 2

(13Xa-30):3-10=1225:7=175
(13xa-30):3=175+10=185
13xa-30=185x3=555
13xa=555+30=585
x=585:13=45
x=45
sper ca te-am ajutat