Question

После приведения подобных слагаемых (5a−18b+22c)−(−20a+22b−20c) ​

Answer 1

Объяснение:

$(5a - 18b + 22c) - ( - 20a + 22b - 20c) = 5a-18b+22c-\left(-20a\right)-22b-\left(-20c\right) =5a-18b+22c+20a-22b-\left(-20c\right) =5a-18b+22c+20a-22b+20c =25a-18b+22c-22b+20c =25a-40b+22c+20c =25a-40b+42c$