3 horse is 30
1 horse × cap + horse is 170
slides + slides ×cap is 238
slide+ horse×cap is what?
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The sum of two numbers is 50. a + b = 50 (Equation 1) a - b = 4 (Equation 2) a + b = 50 (Equation 1) b = 50 - a (subtract a from both sides) a - b = 4(Equation 2) a - (50 - a) = 4 (Substitution, replacing b with what we derived from Equation 1) a - 50 + a = 4 (Remove the parenthesis, multiply negative one to both 50
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