Question

scoate factorul comun in afara parantezelor, apoi calculati d)12*91-12*44-12*17
113*58-15*113-113*43
f)64*123-64*11+88*64
210*304-304*150+940*304

ajutor plz

Answer 1

d) 12 * 91 - 12 * 44 - 12 * 17 =
    12(91 - 44 - 17) =
    12 * 30 =
    360
e) 113 * 58 - 15 * 113 - 113 * 43 =
    113(58 - 15 - 43) =
    113 * 0 =
    0
f) 64 * 123 - 64 * 11 + 88 * 64 =
   64(123 - 11+ 88) =     
   64 * 200 = 
   12800
g) 210 * 304 - 304 * 150 + 940 * 304 =
    304(210 - 150 + 940) =
    304 * 1000 =
    304000

Answer 2

d)
12*91-12*44-12*17=
12×(91-44-17)=
12×(47-17)=
12×30=
360


113*58-15*113-113*43=
113×(58-15-43)=
113×(43-43)=
113×0=
0

f)
64*123-64*11+88*64=
64×(123-11+88)=
64×(112+88)=
64×200=
12 800


210*304-304*150+940*304=
304×(210-150+940)=
304×(60+940)=
304×1 000=
304 000