krisncrystal krisncrystal

22-10-2014
Mathematics

Answered

which expression has a value of 199
a 4times28+6times17minus15
b 4times17+6times28minus38
c 4times38+6times15minus28
d 4times15+6times38minus88

Answer :

Аноним Аноним

22-10-2014

4 × 28 + 6 × 17 - 15 = 112 + 102 - 15 =214 - 15 = 199

4 × 17 + 6 × 28 - 38 = 68 + 168 - 38 = 236 - 38 = 198

4 × 38 + 6 × 15 - 28 = 152 + 90 - 28 = 242 - 28 = 214

4 × 15 + 6 × 38 - 88 = 60 + 228 - 88 = 288 - 88 = 200

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