First, you have to know exactly what you're looking for. It doesn't help to
vaguely know only that you need to "work it out". You have to know that
you're looking for the definite value for 'w' that makes the equation a true
statement. Here's how to find it:
5 (4 + w) = 10
Eliminate parentheses on the left side:
20 + 5w = 10
Subtract 20 from each side:
5w = -10
Divide each side by 5:
w = -2
That's the number that 'w' must be. If 'w' is not -2, then
5(4 + w) is not equal to 10.
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10 - (3y + 2) = 2 First solve the bracket: 10 - 3y + 2 = 2 Bring all constants to one side: 10 + 2 - 2 = 3y Simplify: 10 = 3y y = 31/3 (3.33333333333)
-4 plus 10 equals 6.
x=10
Sqrt (10 + sqrt 51) = sqrt (10 + 7.14) = sqrt 17.14 = 4.14
12 + 10 + 11 equals 33