Đáp án:
b) x=200
Giải thích các bước giải:
\(\begin{array}{l}
a)15 - x = 35 + 10\\
\to 15 - x = 45\\
\to x = - 30\\
a) - x = - 26 - 32 + 14\\
\to - x = - 44\\
a)x = - 10 + 7 + 14\\
\to x = 11\\
a)x = - 14 + 57 + 15\\
\to x = 58\\
a) - x = - 10 + 15 + 14\\
\to - x = 19\\
a)x = 11 - 26 + 25 - 9\\
\to x = 1\\
b)x - 96 = 443 - x - 15\\
\to 2x = 443 - 15 + 96\\
\to 2x = 524\\
\to x = 262\\
b)305 - x - 14 = 48 + x - 23\\
\to 2x = 305 - 14 - 48 + 23\\
\to 2x = 266\\
\to x = 133\\
b) - 35 + x - 37 + x = 33 - x\\
\to 3x = 105\\
\to x = 35\\
b) - 754 - x = x - 753 - 23\\
\to 2x = 22\\
\to x = 11\\
b)x - 12 - 15 = 3 - 18 - x\\
\to 2x = 12\\
\to x = 6\\
b) - x + 815 = 499 + x - 84\\
\to 2x = 400\\
\to x = 200
\end{array}\)
