Question

(15u-21)*3+27=234 (36t+98)^14=25

Answer 1

$(15u-21)\cdot3+27=234$

 

$(15u-21)\cdot3=234-27$

 

$(15u-21)\cdot3=207$

 

$15u-21=207:3$

 

$15u-21=69$

 

$15u=69+21$

 

$15u=90$

 

$u=90:15$

 

$u=6$

___________________________________________________________

$(15\cdot6-21)\cdot3+27=234$ (это проверка)

 

$(90-21)\cdot3+27=234$

 

$69\cdot3+27=234$

 

$207+27=234$

 

$234=234$

===========================================================

$(36t+98):14=25$

 

$36t+98=25\cdot14$

 

$36t+98=350$

 

$36t=350-98$

 

$36t=252$

 

$t=252:36$

 

$t=7$

___________________________________________________________

$(36\cdot7+98):14=25$

 

$(252+98):14=25$

 

$350:14=25$

 

$25=25$