78. Решите уравнение: 3,8 + x = 6,7 ...

Вот решения уравнений: **Левый столбец:** 1. $3,8 + x = 6,7 \Rightarrow x = 6,7 - 3,8 = \mathbf{2,9}$ 2. $1,64 + x = 7,9 \Rightarrow x = 7,9 - 1,64 = \mathbf{6,26}$ 3. $2,706 + x = 7,407 \Rightarrow x = 7,407 - 2,706 = \mathbf{4,701}$ 4. $2,151 + x = 4,162 \Rightarrow x = 4,162 - 2,151 = \mathbf{2,011}$ 5. $x - 15,81 = 16,083 \Rightarrow x = 16,083 + 15,81 = \mathbf{31,893}$ 6. $14,92 - x = 7,64 \Rightarrow x = 14,92 - 7,64 = \mathbf{7,28}$ 7. $21,032 + x = 24,03 \Rightarrow x = 24,03 - 21,032 = \mathbf{2,998}$ 8. $15,15 - x = 8,96 \Rightarrow x = 15,15 - 8,96 = \mathbf{6,19}$ 9. $0,39 - x = 0,02 \Rightarrow x = 0,39 - 0,02 = \mathbf{0,37}$ 10. $0,23 + x = 0,74 \Rightarrow x = 0,74 - 0,23 = \mathbf{0,51}$ **Правый столбец:** 1. $5,4 + x = 7,9 \Rightarrow x = 7,9 - 5,4 = \mathbf{2,5}$ 2. $1,6 + x = 5,3 \Rightarrow x = 5,3 - 1,6 = \mathbf{3,7}$ 3. $4,13 + x = 9,53 \Rightarrow x = 9,53 - 4,13 = \mathbf{5,4}$ 4. $1,623 + x = 3,967 \Rightarrow x = 3,967 - 1,623 = \mathbf{2,344}$ 5. $x - 12,34 = 5,66 \Rightarrow x = 5,66 + 12,34 = \mathbf{18}$ 6. $17,37 - x = 2,37 \Rightarrow x = 17,37 - 2,37 = \mathbf{15}$ 7. $17,041 + x = 26,942 \Rightarrow x = 26,942 - 17,041 = \mathbf{9,901}$ 8. $11,72 + x = 16,96 \Rightarrow x = 16,96 - 11,72 = \mathbf{5,24}$ 9. $0,42 - x = 0,21 \Rightarrow x = 0,42 - 0,21 = \mathbf{0,21}$ 10. $0,19 + x = 0,72 \Rightarrow x = 0,72 - 0,19 = \mathbf{0,53}$