Question

afla valoarea termenului necunoscut: m:7+(123×3- 53×4)=164;(n- 45:9)×3=2185- 2164

Answer 1

m÷7+(123×3-53×4)=164
m÷7+(369-212)=164
m÷7+157=164
m÷7=164-157
m÷7=7
m=7×7
m=49

(n-45÷9)×3=2185-2164
(n-5)×3=21
n-5=21÷3
n-5=7
n=7+5
n=12