Solve the Equation: 75 - Triangle Symbol = 70

You could subtract 70 from both sides to get $5 - \triangle = 0$, but then you'd need another step to isolate the triangle. It's more efficient to rearrange directly to $\triangle = 75 - 70$.

Think of the triangle as just another variable, like x or y! The shape doesn't matter - it's still an unknown number you need to find using the same algebraic rules.

Look at the original equation structure. Since it's $75 - \triangle = 70$, you need 75 minus something equals 70. That something is 75 - 70 = 5.

Yes! Adding $\triangle$ to both sides gives $75 = 70 + \triangle$, then subtract 70 from both sides to get $\triangle = 5$. Same answer, different path!

Always check your work! Substitute your answer back into the original equation. If $75 - \text{your answer} \neq 70$, then review your steps and try again.