perezsamantha3oqr0za
24.03.2020 •
Mathematics
Hel
1) Twice a number equals 5 times the same number plus 18. Which is the number?
2) If a + b= 29 , b + c = 45, a + c = 44 Find a + b + c = ?
3) Solve the equation: Solve the equation:
(11x - 5)^2 - (10x - 1)^2 −(3x−20)(7x+10)=124
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Ответ:
1) 2x=5x+18
3x=−18
x=−6
2) (a + b) + (b + c) + (a + c) = 29 + 45 + 44
a + b + b + c + a + c = 118
2a + 2b + 2c = 118
2(a + b + c) = 118
a + b + c = 59
3) x = -5
Ответ:
part b would be 50/50 or 20/40 or 1/2 prety much anything that represents 1/2