1целая - 5/7 * 3/4 = 1 - 15/28 = 28/28 - 15/28 = 13/28
0.27a + a - 0.28a = 7.63Combine like terms:0.27a - 0.28a + a = 7.630.99a = 7.63Divide by 0.99 on both sides:a = 7.63 / 0.99a = 7.7
1целая - 5/7 * 3/4 = 1 - 15/28 = 28/28 - 15/28 = 13/28
0.27a + a - 0.28a = 7.63
Combine like terms:
0.27a - 0.28a + a = 7.63
0.99a = 7.63
Divide by 0.99 on both sides:
a = 7.63 / 0.99
a = 7.7