7414 + 3698 + 1257 + 1869 = ?

If 13x + 1 < 2?z , and z+3 =5y then

45% of816 - 23% of? = 240.7

750.46 + 114.09-84004 =? -13.09

45% of 160 +14% of 250 = ? - 23

If  x^1/3+y^1/3+z^1/3=0, then the values of (x+y+z)³ will be

11.6 +9.28 ÷ 0.464 – 0.2828 + 0.07 - ?

(1/10)18 – (1/10)20 = ?

If 2x + 3y -31, y – z - 4 and x + 2z – 11, then what is the value of x + y + z ?

√841x √64÷√25=?