7x+2y=9xy-1=8xy
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3(7v-5)-v(10v-9) = 21v - 15 -10v² + 9v = - 10v² + 30v - 15
Answer:
2,5 b 1 c 0,5 d -1 e 2,5
Step-by-step explanation:
Answer:
2- 96, 3- 203.5
Step-by-step explanation:
2- 9 x 8 + (10 x 8)/2 = 96
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3- 12 x 18 - (5 x 5) / 2 = 203.5