力ちからを合あわせる

expression, ichidan verb

join forces; cooperate; work together

Used when multiple people or groups combine their efforts toward a common goal. Often implies pooling strength or resources.

• みんなで力ちからを合あわせて、この問もん題だいを解かい決けつしよう。

  Let's all join forces and solve this problem.

• 地ち