Question

y-27=45

37+x=64

63-(25+x=26

9× 63 - 515:5=

36 × (258+246):129=

Answer 1

Пошаговое объяснение:

$y - 27 = 45 \\ y = 45 + 27 \\ y = 72$

$37 + x = 64 \\ x = 64 - 37 \\ x = 27$

$63 -(25 +x) = 26 \\ 63 - (25 + x) - 26 = 0 \\ - (25 + x) = - 37 \\ - 25 - x = - 37 \\ - x = - 37 + 25 \\ - x = - 12 \\ x = 12$

$9 \times 63 - 515:5 = 567 - 103 = 464$

36×504:129=36×504/129=12×504/43=6048/43=140 28/43