rozwiąż równania9m +1=5m+45,11n+7=5n+43, 7a+20=6a+39, 13z+15=z+63 plissss na teraz szybko

9m + 1 = 5m + 45 9m - 5m = 45 - 1 4m = 44     /:4 m = 11 11n + 7 = 5n + 43 11n - 5n = 43 - 7 6n = 36     /:6 n = 6 7a + 20 = 6a + 39 7a - 6a = 39 - 20 a = 19 13z + 15 = z + 63 13z - z = 63 - 15 12z = 48     /:12 z = 4

a) 9m+1=5m+45 9m-5m=45-1 4m=44/:4 m=11 b) 11n+7=5n+43 11n-5n=43-7 6n=36/:6 n=6 c) 7a+20=6a+39 7a-6a=39-20 a=19 d)13z+15=z+63 13z-z=63-15 12z=48/:12 z=4