Question

rezolvati ecuatiile: 18×(x-11)=144 7(3x-5)+23=144 51-2×(7x+1)=19 va rogg e urgenttt dau coroanaaaaa​

Answer 1

Răspuns:

$18 \times (x - 11) = 144 \\ 18x - 198 = 144 \\ 18x = 342 \\ x = 19 \\ 7(3x - 5) + 23 = 144 \\ 21x - 35 + 23 = 144 \\ 21x = 156 \\ 51 - 2(7x + 1) = 19 \\ 51 - 14x - 2 = 19\\ \\ - 14x = - 30 \\ x = \frac{30}{14} = \frac{15}{7}$