Question

Explain how to solve the equation by reasoning about numbers, operations, and expressions. Do NOT use standard algebraic equation-solving techniques. 348 + 926 = x + 350

Answer 1

x=924

Explanation:

348 + 926 = x + 350

we have two 2-terms additions in both sides of the equation.

348 and 350 are two similar numbers then x and 926 should be really close numbers.

(due to commutative property of additions 348 + 926 = 350 + x)

since 348 has two units less than 350, then 926 must have two units more than x, and x=924

(indirect proportionality)