Question

решите уравнения

25z+49=149
13+10t=163
9y-54=162
181-8r=45

Answer 1

25z+49=149

25z=149-49

25z=100

z=100÷25

z=4

13+10t=163

10t=163-13

10t=150

t=150÷10

t=15

9y-54=162

9y=162+54

9y=216

y=216÷9

y=24

181-8r=45

-8r=45-181

-8r=-136

r=-136÷(-8)

r=17