Question

(3×100+4×10+x)+(2×10+x)=370​

Answer 1

your answer
300+40+x +20+x= 370
360+2x =370
x=5

Answer 2

(300+40+x)+(20+x)=370
340+x+20x=370
(340+20)x=370
360x=370
x=
$370 \div 360 = 1.0277777778$