Question 1056093
Let {{{ a }}} = Brian's age now
Let {{{ b }}} = his brother's age now
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(1) {{{ a = b - 7 }}}
(2) {{{ b + 2 = 2a }}}
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(1) {{{ b = a + 7 }}}
Plug this result into (2)
(2) {{{ a + 7 + 2 = 2a }}}
(2) {{{ a = 9 }}}
and
(1) {{{ b = a + 7 }}}
(1) {{{ b = 9 + 7 }}}
(1) {{{ b = 16 }}}
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Brian is 9
His brother is 16 
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check:
In 2 yrs, his brother will be 18
That is twice Brian's age now
OK