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МатематикаВопрос:
22) 6*(2c-3)+2*(4-3c)=5,
Ответ:
Раскроем скобки:
12c - 18 + 8 - 6c = 5
6c - 10 = 5
6c = 5 + 10
6c = 15
c = 15 / 6
c = 2.5
Ответ: c = 2.5
12c - 18 + 8 - 6c = 5
6c - 10 = 5
6c = 5 + 10
6c = 15
c = 15 / 6
c = 2.5
Ответ: c = 2.5
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- 4) 7*(a-1)=3a.
- 5) 7*(-3+2x)=-6x-1,
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- 11) -5*(3a+1)-11=-16,
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- 13) -5*(0,8f-1,4)=-f+7,
- 14) 5*(r-7)-3*(r-4)=-27,
- 15) 8-7*(c-2)=2*(2c-3)+3c,
- 16) 4*(x-3)-16=5*(x-5),
- 17) 5*(y-3)+27=4y+3*(2y-5),
- 18) -4*(3-5z)=18z-7,
- 19) 1,2-2*(1,3y+1)=5,6y-27,04,
- 20) 8*(2f-6)=2*(4f+3),
- 21) -3*(2,1m-1)+4,8=-6,7m+9,4,
- 23) \(\frac{3}{2}\)h + \(\frac{1}{4}\)h - \(\frac{3}{4}\) = 2 - \(\frac{1}{2}\)h + 2\(\frac{1}{4}\)h,
- 24) 1\(\frac{1}{2}\)x + 3\(\frac{2}{5}\) = 1\(\frac{1}{3}\)x - 2\(\frac{7}{15}\)x + 2,5,
- 25) 2*\(\frac{2}{5}z+1\)+3\(\frac{1}{3}\)=4*\(\frac{4}{5}z-1\).
