Answer:
see explanation
Explanation:
An increase of 12 to the value x means add the two values, that is
x + 12 = 15 ← is the equation
x + 12 = 15
'' x increased by 12 ''
that means you are adding 12 to a value therefore , x+12
''is equal to 15''
just set it up now
x+12=15
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