- a) 4x + 7x = 1,98
$$11x = 1,98$$
$$x = 1,98 : 11$$
$$x = 0,18$$
- б) 9z – 5z = 5,52
$$4z = 5,52$$
$$z = 5,52 : 4$$
$$z = 1,38$$
- в) 2t + 5t + 3,18 = 25,3
$$7t = 25,3 - 3,18$$
$$7t = 22,12$$
$$t = 22,12 : 7$$
$$t = 3,16$$
- г) 8р - 2р – 14,21 = 75,19
$$6p = 75,19 + 14,21$$
$$6p = 89,4$$
$$p = 89,4 : 6$$
$$p = 14,9$$
Ответ: а) 0,18; б) 1,38; в) 3,16; г) 14,9