Question 838726
Let {{{ a }}} = area of Sahara desert
Let {{{ b }}} = area of Australian desert
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(1) {{{ a + b = 13 }}} million km2
(2) {{{ a = b + 5 }}} million km2
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(1) {{{ b = 13 - a }}}
(2) {{{ a = b + 5 }}}
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