а) 1.5х + 7 = 10 1.5х = 10 - 7 1.5х = 3 х= 3 : 1.5 х = 2
б) 2.6а - 0.9 = 3 2.6а = 3 + 0.9 2.6а = 3.9 а = 3.9 : 2.6 а = 1.5
ж) 10 - 0.3 б = 6.4 -0.3б = 6.4 - 10 -0.3б = -3.6 б = -3.6 : - 0.3 б = 12
з) 1.5 + 2.5х = 5 2.5х = 5 - 1.5 2.5х= 3.5 х = 3.5 : 2.5 х = 1.4
а) 56 + 3х = 62 3х= 62 - 56 3х= 6 х = 6 : 3 х=2
56 + 3 *2 = 56 + 6 = 62
б) 8а - 11 = 69 8а= 69 + 11 8а= 80 а = 80 : 8 а = 10
8 * 10 - 11 = 80 - 11 = 69
