Question 1059670
Let {{{ a }}} = Jerry's age now
Let {{{ b }}} = George's age now
Let {{{ c }}} = Kramer's age now
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(1) {{{ a = b + 6 }}}
(2) {{{ c = b - 9 }}}
(3) {{{ a + b + c = 93 }}}
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Substitute (1) and (2) into (3)
(3) {{{ b + 6 + b + b - 9 = 93 }}}
(3) {{{ 3b = 93 - 6 + 9 }}}
(3) {{{ 3b = 96 }}}
(3) {{{ b = 32 }}}
and
(1) {{{ a = 32 + 6 }}}
(1) {{{ a = 38 }}}
and
(2) {{{ c = 32 - 9 }}}
(2) {{{ c = 23 }}}
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Jerry is 38
George is 32
Kramer is 23
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check:
(3) {{{ a + b + c = 93 }}}
(3) {{{ 38 + 32 + 23 = 93 }}}
(3) {{{ 93 = 93 }}}
OK