(х+7,65)-4,02=68,304
Х+7,65= 4,02+68,304 х+7,65= 72,324 х=72,324-7,65 х=64,674
(х+7,65)-4,02=68,304 х+7,65-4,02=68,304 х=68,304+4,02-7,65 х=64,674