Question

Addition and subtraction equations. Solve and check each equation. 1. P + 37 = 1052. M - 40.5 = 24.13. 72 = 11.5 + x + 22.54. 20 + 12.9 = k - 10.35. 94 + w = 1626. $15 + m = $417. T - 12 = 90 + 58. 256 = x - 34.89. 100 + 8 = 20 + c + 17

Answer 1

we have the equation

72 = 11.5 + x + 22.5

solve for x

that means

isolate the variable x

so

step 1

Combine like terms right side

72=x+34

step 2

subtract 34 both sides

72-34=x+34-34

Combine like terms

38=x

therefore

x=38

Check the solution

substitute the value of x in the original expression

72 = 11.5 + 38 + 22.5

Combine like terms

72=34+38

72=72 -----> is true

that means -----> the solution is correct